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If the eight digit number 2575d568 is divisible by 54and 87 the value of d is ?? |
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Answer» 54 = 2×3×3×3=2×3^3 87 = 3 ×29 The eight digit NUMBER 25,75d,568 must be divisible by 2 , 27 and 29. So as to make it divisible by 27, it must be divisible by 3 at least. From the divisibility rule for 3, the total of the digit must be divisible by 3. Hence, 2 + 5 + 7 + 5 + d + 5 + 6 + 8 = 38 + d d must be a SINGLE digit. So, d = 1, 4 or 7. But , if d = 1 and 4 then 25751568 and 25754568 are not divisible by 29. Hence (d = 7) HOPE IT HELPS... PLS MARK AS BRAINLIEST |
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