state gov TSPSC Forest Beat Officer (ఫారెస్ట్ బీట్ ఆఫీసర్) Mock Test 2023 Quantitative Aptitude Elementary Statistics
If the arithmetic mean of 13 observations 455, 456, 458, 449, 457, 451, 453, 448, 456, 457, X, 451, 455 is 440. Find the value of "X" in the observations.
1
274
2
276
3
280
4
278