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  1. The average of odd number upto 100 is ?
    1. 51
    2. 50
    3. 49.5
    4. 49
Correct Option: B

sum of odd number upto 100 = 1 + 3 + 5 + 7+....+ 95 + 97 + 99
=(1+99) + (3+97) + (5+95) +.... upto 25 terms
= 100 + 100 + 100 +.... upto 25 terms
= 2500

Average = 2500 /50
= 50


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