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प्रश्न
The sum of the multiplication table of natural number ‘n’ is given by 55 × n. Find the sum of table of 19.
उत्तर
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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संबंधित प्रश्न
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If 
= 2x + 3, 
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+ 
– 3
