Question

52 (469
(a) 2
(a) 16
(469 + 174)2-(469-174)2
is equal to :
469 x 174
(b) 4
(c) 295
53. The sum of first 45 natural numbers is :
a) 1035
(b) 1280
(c) 2070
54. The sum of even numbers between 1 and 31 is :
(b) 128
(c) 240
55.(51 +52 +53 + ..... + 100) is equal to :
(a) 2525
(b) 2975
(c) 3225
56. How many numbers between 200 and 600 are divisible by
(a) 5
(b) 6
(C) 7
57. How many three-digit numbers are divisible by 6 in all ?
(a) 149
(b) 150
(c) 151
58. If (12 + 2 + 32 + ..... +102) = 385, then the value of (22 -
(a) 770
(b) 1115
(C) 1540
59. The value of (112 + 122 + 132 + 142 + ..... + 202) is :
(a) 385
(b) 2485
(c) 2870
6011*
0
11.1211 01 A​

Answer 1

i cnt understand this u tell first then i will edit it

Answer 2

what is this I can't understand