5×555 a Multiple of 9 ? - Mathematics

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Sum

5 × 555 a multiple of 9?

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Solution

Sum of the digits of 5 × 555

= 5 + x + 5 + 5 + 5 = 20 + x

It is multiple by 9

The sum should be divisible by 9

Value of x will be 7

  Is there an error in this question or solution?

APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 5 Playing with Numbers
Exercise 5 (D) | Q 9 | Page 62
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