Correct Answer: Option C
সংখ্যা চার টি = x, x+1, x+2, x+3
x+ x+1+x+2+ x + 3 = s
4x + 6= s
4x = s - 6
x = (s-6)/4
x+3 = (s-6+ 12)/4 = (s+6)/4
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the average of 4 numbers will be the 2.5 th number which is s/4
4th num
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