Simplification MCQ Question with Details Answer
Q1. 2.002 + 7.9 {(2.8 – 6.3 (3.6 – 1.5) + 15.6)}
(a) 2.002
(b) 4.2845
(c) 4.0843
(d) 42.845
Answer: (d) 42.845 Solution: 2.002 + 7.9 {(2.8 – 6.3 (3.6 – 1.5) + 15.6)} = 2.002 + 7.9 (2.8 – 6.3 × 2.1 + 15.6) = 2.002 + 7.9 (2.8 – 13.23 + 15.6) = 2.002 + 7.9 × 15.17 = 2.002 + 40.843 = 42.845 |
Q2. The value of 3÷[(8−5)÷{(4−2)+(2+813)}]
(a) 1517
(b) 1317
(c) 1519
(d) 1319
Answer: (b) Solution: 3÷[(8−5)÷{(4−2)÷(2+813)}] =3÷[3÷{2÷3413}] =3÷[3÷1317]=3÷3×1713 =3×133×17=1317 |
Q3. 9−129of3311÷517of79=?
(a) 54
(b) 8
(c) 83281
(d) 9
Answer: (b) 8 Solution: 9−129of3311÷517of79 =9−119of3611×1367×79 =9−4×14=8 |
Q4. 777.07 + 77.77 + 0.77 + 7.07 + 7 + 77 = ?
(a) 946.78
(b) 946.68
(c) 964.68
(d) 946.86
Answer: (c) 964.68 Solution: |
Q5. Find the value of 99917+99927+99937+99947+99957+99967
(a) 5997
(b) 5979
(c) 5994
(d) 6997
Answer: (a) Solution: 99917+99927+99937+99947+99957+99967 =999+17+999+27+999+37+999+47+999+57+999+67 6×999+1+2+3+4+5+67=5994+3=5997 |
Q6. Find the value of 13+115+135+163+199
(a) 1011
(b) 911
(c) 511
(d) 711
Answer: (c) Solution: 13+115+135+163+199 =11.3+13.5+15.7+17.9+19.11 =12(1−111)=511
Triks: 1n(n+2)+1(n+2)(n+4)+….+1{n(m−2)}(n+m) =12(1n−1n+m) |
Q7. Find the value of 0.ˉ3+0.ˉ6+0.ˉ7+0.ˉ8
(a) 2310
(b) 223
(c) 20.¯35
(d) 5310
Answer: (b) Solution: 0.ˉ3+0.ˉ6+0.ˉ7+0.ˉ8 =39+69+79+89=3+6+7+89=249=223 |
Q8. 1/4th of number of boys and 3/8th of number of girls participated in annual sports of the school. What fractional part of total number of students participated?
(a) 32
(b) 20
(c) 36
(d) Data inadequate
(e) None of the above
Answer: (d) Solution: total number of students participated = B4+3G8 Required percentage = B4+3G8(B+G)×100 Since, B and G are unknown ; Clearly given Data is inadequate. |
Q9. Simplify : 1+11+22+31+45
(a) 11117
(b) 157
(c) 1617
(d) 12117
Answer: (a) 11117 Solution: 1st ⇒ 1+45=95 2nd ⇒ 2+3×59=113 3rd ⇒ 1+2×311=1711 4th ⇒1+1117=11117 |
Q10. . If x = 1+11+11+11+12 then, the value of 2x+74 is
(a) 3
(b) 4
(c) 5
(d) 6
Answer: (c) 5 Solution: 1st ⇒ 1+12=32 2nd ⇒ 1+23=53 3rd ⇒ 1+35=85 4th ⇒ 1+58=138 ∴ 2x+74=2×138+74=5 |