Monthly Archives: February 2017

DAY 60:

Today’s Challenge Read the information below to find the particular number in question: I am a 2-digit square number that does not contain any odd digits. What is the number? . The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid of 49 … Continue reading

DAY 59:

Today’s Challenge Your starting number is 18 and your task is to arrive at the same final answer.  There are ten arithmetical steps from beginning to end, each one involving a whole number, but the 9th, and penultimate, step is … Continue reading

DAY 58:

Today’s Challenge Starting from 1, find the sum of the first SEVEN whole numbers that do not contain a 3, 5 or 7 as part of their number, or are not multiples of 3, 5 or 7. . The 7puzzle Challenge The … Continue reading

DAY 57:

Today’s Challenge Replace the 12 ◯’s below with 1, 1, 2, 2, 3, 3, 4, 4, 5, 6, 7 and 8 so all three lines work out: ◯  +  ◯   =    5    =   ◯  –  ◯ … Continue reading

DAY 56:

Today’s Challenge Replace the 12 ◯’s below with the 12 numbers 0, 1, 2, 2, 3, 3, 4, 6, 6, 7, 9 and 9 so that all three lines work out arithmetically: ◯  +  ◯   =     6 … Continue reading

DAY 55:

Today’s Challenge ‘Can You Pass A Simple Math Test?’ was recently published in the United States and contains five multiple choice questions.  Answer A, B, C or D each time. How many seconds are in 2 hours?       … Continue reading

DAY 54:

Today’s Challenge Just one 2-digit number has this property: when 2 is subtracted from it and the result doubled, it becomes the same 2-digit number with its digits reversed. What is it? . The 7puzzle Challenge The playing board of the 7puzzle … Continue reading

DAY 53:

Today’s Challenge From the numbers  1  2  3  4  5  6  7  8  9  10  12  14  15  16  18  20  21  24  25, eliminate: square numbers triangular numbers multiples of 4 factors of 70. Which is the one number … Continue reading