Qstnid -D-8- 7 &Times; 34 Divisible By 9? - 05: Playing With Number Class 8 Maths - Icse-viii-mathematics

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ICSE-VIII-Mathematics

05: Playing with Number Class 8 Maths

with Solutions - page 4

Qstn# D-8 Prvs-Qstn Next-Qstn

#8
7 × 34 divisible by 9?
Ans : 7 × 34 is multiple of 9
⇒ 7 + x + 3 + 4 is a multiple of 9
⇒ 14 + x = 0, 9, 18, 27,
⇒ x = -1, 4, 13,
Since, x is a digit x = 4