CHSL 21 01-06-2022 Shift 3


Question 1

The average of 25 numbers is 13. If the average of the first 13 numbers is 11.5 and the average of the last 13 numbers is 14.5, then the middle number is:
25 संख्याओं का औसत 13 है। यदि पहली 13 संख्याओं का औसत 11.5 है और अंतिम 13 संख्याओं का औसत 14.5 है, तो ठीक बीच में आने वाली संख्या ज्ञात कीजिए।

Options

A

17

17

B

19

19

C

21

21

D

13

13


Solution:

Correct Answer:

D

13

13


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