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Which one of the following is not a prime number?
A. 31 B. 61
C. 71 D. 91
Read Solution (Total 3)
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- 91 is not a prime No. which is divisible
by 1,7 and 91 - 13 years agoHelpfull: Yes(2) No(0)
- 13 into 7 is equal to 91
- 9 years agoHelpfull: Yes(0) No(0)
- 91, 13*7=91
- 7 years agoHelpfull: Yes(0) No(0)
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