Multiplying 2î + 7ĵ by 5 gives ______
a) 10î + 35ĵ
b) 2î + 35ĵ
c) 10î + 7ĵ
d) 2î + 7ĵ

10 C_(1)+10 C_(3) +10 C_(5) +10 C_(7) +10 C_(9) = …….

Which of the following cannot be the probability of an event (a) 2/3 (b) 1.5 (c) 15 % (d) 0.7

In an AP : Give a = 7 , a_(13)= 35 , find d and S_(13) .

Seven resistance each of 20 Omega are connected with 2 volt battery, reading of ammeter will be. (a) ((1)/(10)) A (b) ((3)/(10)) A (c) ((4)/(10)) A (d) ((7)/(10)) A

Obtain the moles of substances in the following. a. 3.43 g of C b. 7.05 g Br_2 c. 76 g C_4H_(10) d. 35.4 g Li_2 CO_3 e. 2.57 g As f. 7.83 g P_4 g. 41.4 g N_2H_4 h. 153 g Al_2(SO_4)_3

Find the mode of the following marks (out of 10) obtained by 20 students : 4, 6, 5, 9, 3, 2, 7, 7, 6, 5, 4, 9, 10, 10, 3, 4, 7, 6, 9, 9

………… particulate size particles are responsible for causing the greatest harm to human health. (A) PM 2.5 (B) PM 5 (C) PM 10 (D) PM 7

In a graph Sheet Plot each pairs of points, join them by line segments. (i) (2,5), (4,7) (ii) (-3,5), (-1,7) (iii) (-3,-4), (2,-4) (iv) (-3,-5), (2,-5) (v) (4,-2), (4,-3) (vi) (-2,4), (-2,3) (vii) (-2,1), (-2,0) (viii) (4,7), (4,-3) (ix) (4,-2), (2,-4) (x) (4,-3, (2,-5) (xi) (2,5), (2,-5) (xii) (-3,5), (-3,-5) (xiii) (-3,5), (2,5) (xiv) (-1,7), (4,7)

If U= {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, A= {1, 2, 3, 5}, B= {2, 4, 6, 7} and C= {2, 3, 4, 8}. Then, (B cup C)'="………"

If U= {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, A= {1, 2, 3, 5}, B= {2, 4, 6, 7} and C= {2, 3, 4, 8}. Then, (C - A)'="……….."