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NUMBER SYSTEM - PowerPoint PPT Presentation

NUMBER SYSTEM. How many zeros are there at the end of the product? 10*20*30*40*50*60*70*80*90*100 (a) 10 (b) 11 (c) 14 (d) None of these. (d)12. How many numbers of zeroes are there in 1076! (a) 265 (b) 266 (c) 267

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(d)12

(c)267

(c)285

(b) 23

(c) 94

If 5x successfully leaves the remainders 2, 3 and 4 respectively. If the same number is divided by 140, what will be the remainder?4+15x3+20x2+25x+30 is divided by x-3, what will be the value of the quotient?

(a) 5x3+30x2+110x+355 (b) 5x4+32x2+105x +355

(c) 5x4+30x2+110x+350 (d) None of these

(a)

(c) 12

(c) 3

(d) 307

(d) 1590

(b) 54

(b) 8 & 0

(c) 24

(d)

The owner of a local jewellery store hired 3 watchmen to guard his diamonds, but a thief still got in and stole some diamonds. On the way out, the thief met each watchman, one at a time. To each he gave ½ of the diamonds he had then, and 2 more besides. He escaped with one diamond. How many did he steal originally?

• (a) 40

• (b) 36

• (c) 25

• (d) None of these

(b) 36

• A child was asked to add first few natural numbers (i.e. 1+2+3+…) so long his patience permitted. As he stopped, he gave the sum as 575. When the teacher declared the result is wrong, the child discovered he had missed one number in the sequence during addition. The number he missed was:

• (a) Less than 10

• (b) 10

• (c) 15

• (d) 20

(d) 20

• When 2 1+2+3+…) so long his patience permitted. As he stopped, he gave the sum as 575. When the teacher declared the result is wrong, the child discovered he had missed one number in the sequence during addition. The number he missed was:256 is divided by 17, the remainder would be:

• (a) 1

• (b) 16

• (c) 14

• (d) None of these

• Three friends, returning from a movie, stopped to eat at a restaurant. After dinner, they paid their bill and noticed a bowl of mints at the front counter. Zima took 1/3 of the mints, but returned four because she had a monetary pang of guilt. Rima then took ¼ of what was left but returned three for similar reasons. Lima then took half of the remainder but threw two back in to the bowl. The bowl had only 17 mints left when the raid was over. How many mints were originally in the bowl?

• (a) 38

• (b) 31

• (c) 41

• (d) None of these

(d)

• A young girl Reena leaves home with X flowers, goes to the bank of a near by river. On the bank of the river, there are four places of worship, standing in a row. She dips all the X flowers in to the river, the number of flowers doubles. Then, she enters the first place of worship, offers Y flowers to the deity. She dips the remaining flowers in to the river, and again the number of flowers doubles. She goes to the second place of worship, offers Y flowers to the deity. She dips the remaining flowers in to the river, and again the number of flowers doubles. She goes to the third place of worship, offer Y flowers to the deity. She dips the remaining flowers in to the river, and again the number of flowers doubles. She goes to the fourth place of worship, offers Y flowers to the deity. Now she is left with no flowers in hand.

• Contd……

1. If Reena leaves home with 30 flowers, the number of flowers she offers to each deity is:

• (a) 30

• (b) 31

• (c) 32

• (d) 33

(c) 32

(c) 16

(b) 15

• Number of students who have opted for the subjects A,B and C are 60, 84, and 108 respectively. The examination is to be conducted for these students such that only the students of the same subject are allowed in one room. Also the number of students in each room must be same. What is the minimum number of rooms that should be arranged to meet all these conditions?

• (a) 28

• (b) 60

• (c) 12

• (d) 21

(d) 21

(a) 5

(b) 1

(c) 6 s

(a) 1

(b) 8& 0

(c) Rs5.51

(b)

(d) 172

A young girl counted in the following way on the fingers of her left hand. She started calling thumb 1, the index finger 2, middle finger 3, ring finger 4, little finger 5, then reversed direction, calling the ring finger 6, middle finger 7, index finger 8, thumb 9 and then back to the index finger 10, middle finger for 11, and so on. She counted up to 1994. She ended on her:

• (a) Thumb

• (b) index finger

• (c) middle finger

• (d) ring finger

(b) Index finger

(a) 26

(b) 8

(c) 9

• Let N=55 10*15*20*25*30*35*40*45*50?3+173-723. N is divisible by:

• (a) Both 7 & 13

• (b) Both 3 & 13

• (c) Both 17 & 7

• (d) Both 3 & 17

(d)

• If n 10*15*20*25*30*35*40*45*50?2=12345678987654321,

• what is n?

• (a) 12344321

• (b) 1235789

• (c) 111111111

• (d) 11111111

(d)

(a) 30

(a) 7

A person has a certain number of sheep and wants to divide them in to equal groups. He tries groups of 2, but finds he has 1 left over. Then he tries groups of 3, but has 2 left over. Then he tries groups of 4, but has 3 left over….and so on, until he gets to groups of 17, and the sheep fit perfectly. What is the minimum number of sheep the person has?

• (a) 5045039

• (b) 5224079

• (c) 3520640

• (d) 1208379

(a) 5045039

• Amaresh wanted one-rupee, two-rupee, three-rupee, five-rupee & ten-rupee stamps. He asked his friend Adarsh to get four each of two denominations & three each of the other denominations, and gave him Rs80. Before buying stamps, Adarsh treated himself to a candy worth Rs2, but still had enough money to buy the stumps. What was the value of each stamp of the kinds which Amaresh wanted four in number?

• (a) Rs10 & Rs3

• (b) Rs5 & Rs3

• (c) Rs2 & Rs10

• (d) Rs10 & Rs5

(d) Rs10 & Rs5

• The Gangtak Town council decided to have some fun with numbering the houses in snap road which is a new street in the town. For reasons known only to the council, they decided not to use house numbers that contained the digit 3 (e.g. 13, 32 etc) or numbers that were multiples of 5 or 7.If there were 30 houses in snaps street, what is the number of the last house?

• (a) 74

• (b) 62

• (c) 82

• (d) None of these

(b) 54

• If we divide an unknown two-digit number by the number consisting of the same digits written in reverse order, we get 4 as quotient & 3 as remainder. Now if we divide the required number by the sum of the digits, we get 8 as quotient and 7 as the remainder. Find the number.

• (a) 91

• (b) 72

• (c) 71

• (d) 64

(c) 71

A boy multiplied 423 by a certain number and obtained 65589 as his answer. If both the fives are wrong, but other figures are right, find the correct answer.

• (a) 60489

• (b) 60389

• (c) 62389

• (d) 61389

• If x of three digits, leave the same remainder. Find that number of three digits.2 +kx-24=0 & -3 is one of the roots of the equation, then find the value of k:

• (a) 5

• (b) -5

• (c) 8

• (d) None of these

(b) -5

(a) 2

(b) 46

(a) 16 kg

• A certain number of horses and an equal number of men are going some where. Half of the owners are on their horses back while the remaining ones are walking along leading their horses. If the number of legs walking on the ground is 70, how many horses are there?

• (a) 10

• (b) 12

• (c) 14

• (d) None of these

(c) 14

(d)15

(c) 7

(b) 4.8

• The sum of four numbers is 22. The first number is twice the difference of the second and fourth. The second number is five times the difference of the third and the fourth. The third number is twice the difference of the first and the fourth. If the fourth number is the largest of the four then, what is the fourth number?

• (a) 9

• (b) 11

• (c) 8

• (d) 7

• When an object is dropped , the number of feet that it falls is given by the formula N=1/2 gt2, where t is the time in seconds from the time it was dropped and g is 32.2 ft/sec2. If it takes 5 seconds for the object for the object to reach the ground, how many feet does it fall during the last 2 seconds?

• (a) 64.4

• (b) 96.6

• (c) 161.0

• (d) 257.6

(d) 257.6

Sonia likes coke very much. At the local super market a scheme has been announced, under which, for 5 empty coke bottles she receives one full bottle. As a part of Girl’s guide recycling initiative Sonia was able to collect 77 bottles of coke. How many bottles of coke will she be able to drink in total?

• (a) 15 bottles

• (b) 15.4 bottles

• (c) 18 bottles

• (d) 19 bottles

(d) 19 bottles

• In a one day cricket match Sachin Tendulkar decides that for every single run he takes he will hit a four or a six. After hitting 3 fours he can change his bat. When he got out at 87 runs, he has changed his bat for the third time. If he scores all the runs only from singles, fours and sixes, then find out:

• Contd...

• 1.How many singles did he take? every single run he takes he will hit a four or a six. After hitting 3 fours he can change his bat. When he got out at 87 runs, he has changed his bat for the third time. If he scores all the runs only from singles, fours and sixes, then find out:

• (a) 10

• (b) 12

• (c) 15

• (d) 20

(c) 15

• 2. How many fours did he take? every single run he takes he will hit a four or a six. After hitting 3 fours he can change his bat. When he got out at 87 runs, he has changed his bat for the third time. If he scores all the runs only from singles, fours and sixes, then find out:

• (a) 9

• (b) 10

• (c) 11

• (d) None of these

(a) 9

• 3. How many sixes did he take? every single run he takes he will hit a four or a six. After hitting 3 fours he can change his bat. When he got out at 87 runs, he has changed his bat for the third time. If he scores all the runs only from singles, fours and sixes, then find out:

• (a) 4

• (b) 5

• (c) 6

• (d) None of these

c

• Directions: (Q 9 & Q 10) Read the following information carefully and answers the given questions:

• In a kiddy bank the ratio between 50 paisa coins and one rupee coins is 1:2. In another kiddy bank there are only fifty paisa coins and one rupee coins. If half of the amounts from the second kiddy bank is transferred to the first kiddy bank, the ratio between fifty paisa coins and one rupee coins became equal. Then find out:

• Contd…

(c) Rs6.50

(c) 5:8

(a) 39

(a) 0

(c) 28

(c) 20