# Numerical Ability for RRB PO/Clerk 2018: 07 August

## Numerical Ability for RRB PO/Clerk 2018: 07 August

Numerical Ability or Quantitative Aptitude Section is very important to get the best score in Banking and other competitive exams. Now a day, the questions asked in this section are calculative and time-consuming. Once dealt with proper strategy, speed, and accuracy, this section will definitely award you the maximum marks in the examination. Here is another set of Questions to improve your speed and practice. Make most of it.
1. A person invested `25000 in a bank for two years at simple interest at rate 30% per annum. After two years, the person invested the whole amount in another scheme for three years at compound interest of 10% pa. Find the total interest the person will earn after five years.
1) `27450              2) `28240              3) `27590
4) `28650              5) `28300
2. The population of a town increases by 17% in the first year and then decreases by 15% in the second year. If its current population is 1.32 lakh, what will be the difference between its current population and its population after two years?
1) 1295      2) 1026      3) 884        4) 726        5) 672
3. X started a business by investing `120000. 1.5 years later, Y joined the business by investing `150000, and 3.5 years later, a third person Z joined the business by investing `280000. At the end of 6.5 years, they earned a profit of `108941. What is the difference between Z’s share and X’s share in the profit?
1) `1379                 2) `2758                 3) `4137
4) `5516                 5) `6895
4. A person purchased 78 kg of rice at the rate of `50 per kg. He sold 36 kg at a profit of 21%. At what rate per kg should he sell the remaining rice to obtain an overall profit of 28%?
1) `61/kg                2) `63/kg                3) `65/kg
4) `67/kg                5) `69/kg
5. Four bells ring at four different intervals, viz 8 min, 20 min, 25 min and 40 min. Find the number of times they would ring together in 87 hours?
1) 23       2) 24       3) 25       4) 26       5) 27
Directions (Q. 6-10): In each of the following number  series, a wrong number is given. Find out the wrong number.
6.   13,   16,   38,   124,   504,   2535
1) 16         2) 38         3) 124       4) 504       5) 2535
7.    6,   10,   32,   111,   464,   2345
1) 10         2) 32         3) 111       4) 464       5) 2345
8.  8,  18,  64,  272,  1395,  8424
1) 18         2) 64         3) 272       4) 1395     5) 8424
9.  80,  105,  195,  478,  1350,  3975
1) 105       2) 195       3) 478       4) 1350     5) 3975
10.  8,  18,  78,  420,  2424,  15270
1) 18       2) 78       3) 420        4) 2424       5) 15270 