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There are 20 urns such that first urn contains 5 balls the second contains10 balls and in general the kth urncontains 2k + 1 balls more than that in(k - 13th urn. Then the total number ofballs in all the urns(A) 3330(B) 2890(C) 2870(D) 3311w |
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Answer» Given Sum of all balls TOTAL no of balls =20(21)(41)+20(21)+2(20)=2870+420+40=3330∴ OPTION A is correcthope so this will help you |
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