Evaluate: 1 + 3 + 5 + ............+ 61 = __________.
a) 900
b) 951
c) 971
d) 961
Answers
Answered by
1
Answer:
961
Mark it as branliest plzzzz
Answered by
1
see
if we plus
61 +1
59+3
57+5
55+7
53+9
51+11
49+13
47+ 15
45+17
43+19
41+21
39+23
37+25
35+27
33+29
means we have total 15 pairs
62× 15 = 930 +31
=931 ans I think that you understood
please mark me as brainlist
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