# What is the father doing now?

The mother is 21 years older than the son, and in 6 years time she will be 5 times as old as the son. What is the father doing now?

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Correct Answers:

1

Points:

10

## Calculate the number 3423

NUMBERMANIA: Calculate the number 3423 using numbers [6, 5, 1, 6, 61, 278] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

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Correct Answers:

0

Points:

10

## What number comes next?

Look at the series, determine the pattern, and find the value of the unknown number!

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Correct Answers:

25

Points:

1