alleryନିମ୍ନଲିଖିତ ମଧ୍ୟରୁ କେଉଁଟି ଏକ ଯୌଗିକ ସଂଖ୍ୟା?
A19
B23
C29
D21
Answer & Solution
Correct answer: D. 21
21 ର ଗୁଣନୀୟକଗୁଡ଼ିକ ହେଉଛି 1, 3, 7 ଏବଂ 21, ଯାହା ଏହାକୁ ଏକ ଯୌଗିକ ସଂଖ୍ୟା କରେ। 19, 23 ଏବଂ 29 ହେଉଛି ମୌଳିକ ସଂଖ୍ୟା।
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