Determine the value of n if the sum of the consecutive integers from -15 to n, inclusive, equals 70.

Correct answer marked below

A

16

B

17

C

18

19

Correct

E

20

You can see the correct answer above. Sign in for free to unlock the complete worked solution.

Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.

Explanation

Preview

Official Explanation

Official

The correct answer is 19. The integers from -15 to 15 will balance each other out,…

Sign in for free to see the complete step-by-step solution to this question.

Comments

2

Sign in to join the discussion

A

ArvindJan 4, 2024

can you explain more?

Y

YaminaSep 27, 2024

thanks!

What this question tests

Your fluency with the order of operations, fractions, decimals, and basic number sense — the foundation every quant question leans on.

Applying the order of operations out of sequence or rounding intermediate values before the final step.

Create a free account to reveal the correct answer and see step-by-step explanations for every question.