Here, I’m writing about the puzzles, riddles and mathematics questions from the book ” More puzzles” by Shakuntala Devi. These puzzles might be asked in various exams to check your thinking and ability to solve the problems.
Each puzzle in this book provides you to brush your basics and think in different way.
Sum of the reciprocals
The sum of two numbers is ten. Their product is twenty.Can you find the sum of the reciprocals of the two numbers?
Find out the sum
What is the sum of all numbers between 100 and 1000 which are divisible by 14 ?
Read out the Figure
A London monument is marked as follows:
What year does it represent ?
Beetles and Spiders
Naval collected 8 spiders and beetles into a little box. When he counted the legs he found that there were altogether 54. How many beetles and how many spiders did he collect?
Value of “S”
S434S0 What number must be substituted with ‘S’ to make it divisible by 36?
Here is a sequence. Can you find the two missing terms?
Angle of Hands
The time is 2:15 P.M.What is the angle between the hour and minute hands?
It was a long drive. I drove 60 kilometres at 30 kilometres per hour and then an additional 60 kilometres at 50 kilometres per hour.
Tell the Time
Can you tell at what time between 7 and 8 O’clock, the two hands of a clock, will be in a straight line?
A problem of Age
Today was Lakshmi’s birthday.She turned 24.Lakshmi is twice as old as Ramu was when Lakshmi was old as old as Ramu now. How old is Ramu now?