Q. 95.0( 1 Vote )
Find the sum of all two-digit numbers which are either multiple of 2 or 3.
Numbers divisible by both 2 and 3 are multiples of LCM of 2 and 3. So LCM of 2 and 3 is 6. Now the series is 6, 12, 18, 24…98
Sum of this series can be found by using arithmetic progression with first term 6 and common difference 6
N = 16
Hence answer is 816
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