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The sum of the multiplication table of natural number ‘n’ is given by 55 × n. Find the sum of table of 19. - Mathematics

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Question

The sum of the multiplication table of natural number ‘n’ is given by 55 × n. Find the sum of table of 19.

Sum

Solution

Given, the sum of multiplication table of n natural numbers = 55 × n

Sum of table of 19 = 55 × 19  ......[Put n = 19]

= 1045 

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Chapter 10: Algebraic Expressions - Exercise [Page 327]

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NCERT Exemplar Mathematics [English] Class 7
Chapter 10 Algebraic Expressions
Exercise | Q 88. (c) | Page 327

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