The average of 42 numbers is 37. The average of the first 26 numbers is 32, and the average of the last 17 numbers is 44. The 26th number is:
Answer & explanation
Correct answer: option 3
Sum of 42 numbers = 42 × 37 = 1554
Sum of first 26 number is = 26 × 32 = 832
Sum of last 17 numbers = 17 × 44 = 748
26th number = ( 832 + 748) - 1554 = 26