The average of 5 consecutive odd numbers is 75. By adding which number, will the average become 76?
Given, Average of 5 consecutive odd numbers = 75
$$=$$> Sum of 5 consecutive odd numbers = 75 x 5 = 375
Let the number which is to be added = a
Average of 6 numbers = 76
$$=$$> $$\frac{375+a}{6}=76$$
$$=$$>Â $$375+a=76\times6$$
$$=$$> $$a=456-375$$
$$=$$> $$a=81$$
$$\therefore\ $$The number which is to be added = 81
Hence, the correct answer is Option C
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