Question

Which number is missing?
1, 9, 25, 49, (?)
A. 121
B. 81
C. 16
D. 169

Answer 1

Hay.........
^^^^-^^^^^^^^^^^^
here these step is happened
1^2=1
3^2=9
5^2=25
7^2=49
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so........
next term will be
9^2 =81
it is your answer bro...
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Answer 2

♠ Which number is missing?

❇ ANSWER :
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( B ). 81

❇. EXPLANATION :
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❇ 1, 3^2, 5^2, 7 ^2 , 9 ^2

1, 3, 5, 7, 9 had a difference of 2 and after squaring this we get the sequence :

1, 9, 25, 49, 81.