Directions (1-6): What will come at the place of question mark in the following questions? Find the exact value.
Q4. 49 × 51 + 69 × 71 – 89 × 91 – 9 × 11 = ?
(a) 800
(b) -800
(c) -784
(d) 776
(e) -774
Directions (7-15): What approximate value should come in the place of question (?) mark.
Q10. ?% of 1224.98 + 36.01 % of 2500.02 = (33.98)² + 19.01% of 199.97
(a) 24
(b) 20
(c) 16
(d) 12
(e) 28
Q13. 15.812% of 1600.125 + ? % of 1199.98 = 19.88 × 121.98
(a) 182
(b) 142
(c) 326
(d) 286
(e) 216
Q14. (7.98)³ + (14.88)² – (12. 01)² = ? – 1219.812 – 1749.98
(a) 3643
(b) 3425
(c) 3416
(d) 3563
(e) 3521
Solutions