Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 10th
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The value of (13 + 23 + 33 + ... + 153) – (1 + 2 + 3 + ... + 15) is - Mathematics

MCQ

The value of (13 + 23 + 33 + ... + 153) – (1 + 2 + 3 + ... + 15) is

Options

  • 14400

  • 14200

  • 14280

  • 14520

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Solution

14280

Explanation;

Hint:

`((15 xx 16)/2)^2 - (15 xx16)/2`

= (120)2 – 120

= 14280

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APPEARS IN

Samacheer Kalvi Mathematics Class 10 SSLC Tamil Nadu State Board
Chapter 2 Numbers and Sequences
Exercise 2.10 | Q 15 | Page 83
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