cool mat 7

Level pending

another interesting series find the missing term

7 , 4 , 5 , 9 , ? , 42

note ; inspired from my teacher


The answer is 20.

Jai Gupta by Jai Gupta , 22, India

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1 solution

Jai Gupta
Sep 6, 2014

7 multiplied by 0.5 + 0.5 =4

4 multiplied by 1+1=5

similarly same is done

9 multiplied by 1.5 +1.5=20

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Can you explain the pattern?

How do you go from 20 to 52.5? I would expect it to have been 20 × 2 + 2 = 42 20 \times 2 + 2 = 42 .

Calvin Lin Staff - 6 years, 9 months ago

Thanks for correcting the question.

Calvin Lin Staff - 6 years, 9 months ago

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Thx calvin for correcting me

Jai Gupta - 6 years, 9 months ago

@Jai Gupta Who's your teacher? I'd like to meet him/her.

Satvik Golechha - 6 years, 9 months ago

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Arvind sir

Jai Gupta - 6 years, 9 months ago

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