1.

1). 452). 1003). 904). 35

Answer»

As we know AVERAGE = SUM of all the observation/total number of observation

Average of (A, B) – Average of (B, C) = 45

⇒ (A + B)/2 - (B + C)/2 = 45

⇒ A + B - B - C = 45 × 2

⇒ A - C = 90

DIFFERENCE between A and C = 90



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