Average of all even numbers between 222 and 250 is . . . . . . . .
A. 234
B. 232
C. 236
D. 230
Answer: Option C
Solution(By Examveda Team)
$$\eqalign{ & {\text{Numbers are }}224,\,226,\,.....\,248 \cr & {S_n} = \frac{{13}}{2}\left[ {224 + 248} \right] \cr & = \frac{{13}}{2} \times 472 \cr & {\text{Average}} = \frac{{13 \times 472}}{{2 \times 13}} = 236 \cr & \cr & {\bf{Alternate:}} \cr & {\text{Average of all even number between }}222{\text{ and }}250 \cr & \Rightarrow a = 224 \cr & l = 248 \cr & {\text{Average}} = \frac{{a + l}}{2} \cr & = \frac{{224 + 248}}{2} \cr & = 236 \cr} $$Related Questions on Average
A. 125 km/hr
B. 75 km/hr
C. 135 km/hr
D. 120 km/hr
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