Find the sum of all numbers in between 10 and 50 excluding all those number which are divisible by 8. ( include 10 and 50 for counting)
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= Numbers from 10 to 50 - Numbers divisible by 8.
= (10 + 11 + 12 +13 + 14 + 15 ---------- 50) - (16 + 24 + 32 + 40 + 48)
This is in the form of AP. So applying values in an = a+(n-1)*d, we get
= 30 * 41 - 32 * 5
= 1070.
Hope this helps!
= (10 + 11 + 12 +13 + 14 + 15 ---------- 50) - (16 + 24 + 32 + 40 + 48)
This is in the form of AP. So applying values in an = a+(n-1)*d, we get
= 30 * 41 - 32 * 5
= 1070.
Hope this helps!
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