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ICSE-VIII-Mathematics

05: Playing with Number Class 8 Maths

with Solutions - page 4
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  • #3
    28 × 6 is a multiple of 3?
    Ans : 28 × 6 is a multiple of 3
    2 + 8 + x + 6 is a multiple of 3
    ⇒ 16 + x = 0, 3, 6, 9, 12, 15,18
    ⇒ x = -18, -5, -2, 0, 2, 5, 8
    Since, x is a digit = 2, 5, 8