alleryଲେବଲ୍ 7, 12, 17, ..., 82 5 ବୃଦ୍ଧି; ଗୋଟିଏ ହଜିଯାଇଛି, sum 660 ଛାଡି | ହଜିଯାଇଥିବା ଲେବଲ୍?
A62
B47
C57
D52
Answer & Solution
Correct answer: D. 52
ସମୁଦାୟ 16 × (7 + 82) ÷ 2 = 712 ରେ 16 ଟି ଲେବଲ୍ ଅଛି, ତେଣୁ ହଜିଯାଇଥିବା ଲେବଲ୍ ହେଉଛି 712 - 660 = 52 |
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