perplexing problems 1
Download
Skip this Video
Download Presentation
Perplexing problems 1.

Loading in 2 Seconds...

play fullscreen
1 / 5

Perplexing problems 1. - PowerPoint PPT Presentation


  • 103 Views
  • Uploaded on

Perplexing problems 1. What’s the number? It has 3 digits It is a multiple of 11 All the digits are odd The sum of its digits is a square number Answer: 979. Perplexing problems 2. How many go by bus? In a school of 1200 pupils, 580 are girls.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Perplexing problems 1.' - philena-demetria


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
perplexing problems 1

Perplexing problems 1.

What’s the number?

It has 3 digits

It is a multiple of 11

All the digits are odd

The sum of its digits is a square number

Answer: 979

perplexing problems 2
Perplexing problems 2.

How many go by bus?

  • In a school of 1200 pupils, 580 are girls.
  • One third of the pupils travel to school by bus
  • 462 boys do not go by bus
  • How many girls do go by bus?

Answer: 242

perplexing problems 3
Perplexing problems 3.

How many altogether?

  • Sam and Ben collect marbles
  • Sam tells Ben, “If you give me 5 marbles I’ll have twice as many as you.”
  • Ben says, “If you give me 4 we would have the same number”.
  • How many marbles were there altogether?

Answer: 54

perplexing problems 4
Perplexing problems 4.

What number was the middle house?

  • Five houses next door to each other were on the odd side of the road.
  • They were all 2-digit numbers, and in ascending order
  • The fourth one was the only prime number
  • What number was the middle house?

Answer: 95

perplexing problems 5
Perplexing problems 5.

How much altogether?

  • Ann, Bob and Carol are counting their money
  • Ann and Bob together have £5.98
  • Bob and Carol together have £6.47
  • Ann and Carol together have £8.51
  • How much do they have altogether?

Answer: £10.48

ad