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ICSE-VIII-Mathematics

05: Playing with Number Class 8 Maths

with Solutions - page 4
Qstn# D-9 Prvs-QstnNext-Qstn
  • #9
    5 × 555 a multiple of 9?
    Ans : 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