## Shakuntala Devi Puzzles

Want to solve Shakuntala Devi Puzzles ? Solve few of the best puzzles taken from her books like puzzle to puzzle you and more puzzles or you and many more.

Shakuntala Devi is an Indian Mathematician and a writer  too. She has written more than 20 books covering math’s to different sectors of the society. Her books like Puzzle to Puzzle you and More Puzzle to Puzzle, have more than 300 puzzles in each. Enjoy a few of  Puzzles written by her.

## Shakuntala Devi Puzzles from More Puzzles to Puzzle You

Date of publication: 6 Sep 1976
Paperback: 200 pages

Meena went out for shopping. She had in her handbag approximately Rs. 15/- in one rupee notes and 20 p. coins. When she returned, she had as many one rupee notes as she originally had and as many 20 p. coins as she originally had one rupee notes.

She actually came back with about one-third of what she had started out with. How much did she spend and exactly how much did she have with her when she started out?

It was a beautiful sunny morning. The air was fresh, and a mild wind was blowing against my windscreen. I was driving from Bangalore to Brindavan Gardens.

It took me 1 hour and 30 minutes to complete the journey. After lunch, I returned to Bangalore. I drove for 90 minutes. How do you explain it?

## Shakuntala Devi

Can you name the smallest integer that can be written with two digits?

Can you name the biggest number that can be written with four Is?

There are thirty-four lines that are tangent to a circle, and these lines create regions in the plane. Can you tell me how many of these regions are not enclosed?

The sum of the two numbers is ten. Their product is twenty. Can you find the sum of the reciprocals of the two numbers?

A group of us were playing Bingo. I noticed something very interesting. There were different Bingo cards with no two cards having the same set of numbers in the corresponding column or row. The center, of course, was a free space.

How many such cards are possible, can you tell?

Can you combine eight 8s with any other mathematical symbols except numbers so that they represent exactly one thousand?

You may use the plus, minus terms, and division signs, as well as the factorial function and the Gamma function. You may also use the logarithms and the combinatorial symbol.

## Shakuntala Devi Puzzles from Puzzles to Puzzle You

Date of publication: 1 jun 1976
Paperback: 200 pages

A MATTER OF TIME

Fifty minutes ago, if it was four times as many minutes past three o'clock, how many minutes is it until six o'clock?

BROTHERS AND SISTERS

A family I know has several children. Each boy in this family has as many sisters as brothers, but each of the girls has twice as many brothers as sisters. How many brothers and sisters are there?

AROUND THE EQUATOR

Two identical trains, at the equator, start travelling around the world in opposite directions. They start together, run at the same speed, and are on different tracks.

Which train will wear out its wheel treads first?

OVER THE GOLDEN GATE

While in San Francisco some time back, I hired a car to drive over the Golden Gate bridge. One started in the; afternoon, when there was no traffic rush. So I could do 40 miles an hour. While returning, however, I got caught in the traffic rush, and I could only manage to drive at a speed of 25 miles an hour.

What was my average speed for the round trip?

THE GONG

Supposing a clock takes 7 seconds to strike 7, how long does it take for the same clock to strike 10?

COTTON OR GOLD

Which would you say is more substantial, a pound of cotton or a pound of gold?

TALL MEN NEXT DOOR

Next door to me live four brothers of different heights. Their average height is 74 inches, and the difference in height among the first three men is two inches/'The difference between the third and the fourth man is six inches.

Can you tell me how tall each brother is?

THE DIGITS AND SQUARE NUMBERS

All the nine digits are arranged here to form four square numbers:

9, 81, 324, 576

How would you put them together to form a single smallest possible square number and a single largest possible square number?