ପ୍ରଦତ୍ତ ବିକଳ୍ପଗୁଡ଼ିକ ମଧ୍ୟରୁ ସମ୍ପର୍କିତ ସଂଖ୍ୟା ଚୟନ କରନ୍ତୁ: 7 : 49 :: 9 : ?
A72
B81
C90
D99
Answer & Solution
Correct answer: B. 81
ଦ୍ୱିତୀୟ ସଂଖ୍ୟାଟି ପ୍ରଥମ ସଂଖ୍ୟାର ବର୍ଗ ଅଟେ: 7 ର ବର୍ଗ ହେଉଛି 49, ଏବଂ 9 ର ବର୍ଗ ହେଉଛି 81।
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