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Problems on Numbers for Exam

Q11. 86 X 86 - 14 X 14
(a) 7020
(b) 7156
(c) 7200
(d) 7400

Q12.
(251 X 251 X 251) - (69 X 69 X 69)
(251 X 251 + 251 X 69 + 69 X 69)

(a) 180
(b) 182
(c) 285
(d) 1081

Q13.
(407 + 315)2 - (407 - 315)2
407 X 315

(a) 41
(b) 401
(c) 4
(d) 104

Q14.
(215 + 102)2 + (215 - 102)2
215 X 215 + 102 X 102

(a) 2
(b) 12
(c) 102
(d) 215

Q15. 1 + 2 + 3 + ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ + 20 = ?
(a) 20
(b) 120
(c) 201
(d) 210



Q16. 3 + 4 + 5 + ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ + 20 = ?
(a) 205
(b) 206
(c) 207
(d) 208

Q17. 12 + 22 + ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ + 102 = ?
(a) 285
(b) 385
(c) 485
(d) 585

Q18. 32 + 42 + 52 + ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ + 102 = ?
(a) 380
(b) 382
(c) 384
(d) 386

Q19. 13 + 23 + 33 + ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ ⋅ + 103 = ?
(a) 2025
(b) 3025
(c) 3052
(d) 3205

Q20. The difference between the place value and face value of 5 in the number 835422 is
(a) 4995
(b) 5000
(c) 5005
(d) 5995


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