SBI PO Quantitative Aptitude Quiz 2

1 . Directions (1–5): Study the following graph carefully and answer the questions given below. Number of buildings constructed, demolished and redeveloped across various cities in a year Q: What is the difference between the total constructions (constructed, demolished and redeveloped) in City Q and City T? A.   125 B.   180 C.   175 D.   225 2 . What is the difference between the total constructions (constructed, demolished and redeveloped) in City Q and City T? A.   125 B.   180 C.   200 D.   150 3 . The total number of buildings constructed across all the cities together is approximately what percent of the total number of buildings redeveloped across all the cities together? A.   73 B.   74 C.   79 D.   80 4 . What is the approximate average number of construction (Constructed, demolished and redeveloped) in the City R? A.   156 B.   222 C.   216 D.   208 5 . What is the ratio of the number of buildings demolished in City T to the number of buildings redeveloped in City P? A.   7:5 B.   3:5 C.   7:12 D.   None of the above 6 . Directions (6–10): In each of these questions, a number series is given. In each series, only one number is wrong. Find out the wrong number. 4, 5, 12, 38, 160, 805, 4836 A.   12 B.   160 C.   39 D.   805 7 . 3, 7, 16, 32, 56, 93, 142 A.   56 B.   16 C.   32 D.   None of the above 8 . 11, 18, 29, 42, 59, 80, 101 A.   42 B.   18 C.   32 D.   None of the above 9 . 2. 9, 32, 105, 436, 2195, 13182 A.   436 B.   2195 C.   9 D.   32 10 . There is a certain amount from which A takes 25%, then B takes 50% of remaining amount, then C takes 75% of the remaining amount. Now if the amount left is 5760, then what is the actual sum? A.   Rs.58220 B.   Rs.59680 C.   Rs.59680 D.   Rs.61440

Answers & Solutions   1 .   Answer & Explanation Answer : Option C   Explanation :   Total construction in Q = 100 + 175 + 275 = 550 Total construction in T = 175 + 250 + 300 = 725 ∴ Required difference = 725 – 550 = 175 Answer : Option C   Explanation :   Total construction in Q = 100 + 175 + 275 = 550 Total construction in T = 175 + 250 + 300 = 725 ∴ Required difference = 725 – 550 = 175 2 .   Answer & Explanation Answer : Option A   Explanation :   Average of building demolished =$50+175+150+75+175\over5 $ =$625\over5 $ = 125 Answer : Option A   Explanation :   Average of building demolished =$50+175+150+75+175\over5 $ =$625\over5 $ = 125 3 .   Answer & Explanation Answer : Option C   Explanation :   Required percentage = $Total number of buildings constructed\over Total number of building redeveloped $ × 100 = $1100\over1400 $ × 100 ≈79% Answer : Option C   Explanation :   Required percentage = $Total number of buildings constructed\over Total number of building redeveloped $ × 100 = $1100\over1400 $ × 100 ≈79% 4 .   Answer & Explanation Answer : Option D   Explanation :   Average number of construction in City R = $150+225+250\over3 $ = $625\over3 $ ≈ 208 Answer : Option D   Explanation :   Average number of construction in City R = $150+225+250\over3 $ = $625\over3 $ ≈ 208 5 .   Answer & Explanation Answer : Option C   Explanation :   Required ratio = $175\over300 $ = $7\over12 $=7:12 Answer : Option C   Explanation :   Required ratio = $175\over300 $ = $7\over12 $=7:12 6 .   Answer & Explanation Answer : Option C   Explanation :   The pattern of number series is as follows Hence, the wrong number is 38. Right number = 12 × 3 + 3 = 36 + 3 = 39 Answer : Option C   Explanation :   The pattern of number series is as follows Hence, the wrong number is 38. Right number = 12 × 3 + 3 = 36 + 3 = 39 7 .   Answer & Explanation Answer : Option A   Explanation :   The pattern of number is as follows Hence, the wrong number is 56 Right number = 32 + $(5)^5$ = 32 + 25 = 57 Answer : Option A   Explanation :   The pattern of number is as follows Hence, the wrong number is 56 Right number = 32 + $(5)^5$ = 32 + 25 = 57 8 .   Answer & Explanation Answer : Option D   Explanation :   The pattern of number series is as follows This is a prime number series. Hence, the wrong number is 80. Right number = 59 + 19 = 78. Answer : Option D   Explanation :   The pattern of number series is as follows This is a prime number series. Hence, the wrong number is 80. Right number = 59 + 19 = 78. 9 .   Answer & Explanation Answer : Option D   Explanation :   The pattern of number series is as follows So, the wrong number is 32 Right number = 9 × 2 + 2 × 6 = 18 + 12 = 30 Answer : Option D   Explanation :   The pattern of number series is as follows So, the wrong number is 32 Right number = 9 × 2 + 2 × 6 = 18 + 12 = 30 10 .   Answer & Explanation Answer : Option D   Explanation :   Required amount = $Leftamount×100×100×100\over(100 – A)(100 – B)(100 – C)$ = $5760×100×100×100\over75×50×25 $ = 61440 Answer : Option D   Explanation :   Required amount = $Leftamount×100×100×100\over(100 – A)(100 – B)(100 – C)$ = $5760×100×100×100\over75×50×25 $ = 61440