Multiple choice

The average height of 27 persons was recorded as 152 cm. If the height of Sameer was deleted from the observation, the average height reduced by 1 cm. What was Sameer's height?

  1. 179 cm

  2. 178 cm

  3. 176 cm

  4. 180 cm

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Initial sum = 27 * 152 = 4104. New sum (after removing Sameer) = 26 * 151 = 3926. Sameer's height = 4104 - 3926 = 178.

AI explanation

The total height of all 27 persons is 27 times 152 = 4104 cm. When Sameer is deleted, the total height of the remaining 26 persons is 26 times 151 = 3926 cm. Sameer's height is the difference between these totals, which is 4104 minus 3926 = 178 cm. The result is 178 cm.