Pls answer 13

Pls answer 13 is equal to 10. 11. 12. 13. 14, 15. 36 1.4 1.47 36.9 (C) The fourth term in the expansion of 2 will be 2 4 2 If (A) 35 24 is approximately equal to a + bx for small values of x, then (a, b) = (2} (1+3X)2 The coefficient of x' in the expansion of will be 1-2X (B) 32 If x is very small compared to l, then (1— 7x)113 (1 + 2x)-a 23x 6 23X 6 (C) 50 is equal to 25x 6 is The coefficient of x20 in the expansion of (1+ x2)40 • (A) uqa (D) (D) (D) (D) 3 4 35 12 None of these 25x 6 None of these

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