The average of 10 numbers is 21.8. The average of the last four numbers is 15. If the average of the first five numbers is 23, then what is the value of the sixth number?
(RBI Asst. Pre 2016)

Ten years ago, the average age of five employees was 35 years. The present average age is 45 years after the inclusion of two new employees. Find the present average age of two new employees.
(RBI Assist. 2022)

Sumit can swim 12 km upstream and 16 km downstream in 5 hours. If ratio of speed of stream to that of speed of Sumit in upstream is 1:2, then find the speed of Sumit in still water.
(RBI Assist. Pre 2022)

What will come in place of the question mark (?) in each of the following series?
1 6 13 24 41 ?
(RBI Assist. Pre 2022)

A question is given to Saket, Ankush and Prem. Probability that Saket, Ankush and Prem can solve the question is 1/3, 2/5 and 1/2. Find the probability that the question will be solved.
(RBI Assist. Pre 2022)

What will come in place of the question mark (?) in each of the following series?
2 5 16 65 326 ?
(RBI Assist. pre 2022)

A gardener uses cylindrical roller of diameter 7 cm and length 28 cm to flatten a rectangular field of dimension 280cm × 165 cm. Find the number of revolutions made by the roller to flatten the entire field?
(RBI Assist. Pre 2022)

What will come in place of the question mark (?) in each of the following series?
3 12 48 192 768 ?
(RBI Assist. pre 2022)

A & B working together, can do a work in 4(1/2) hrs. B & C working together can do it in 3 hrs. C & A working together can do it in 2(1/4) hrs. how much time it will take to complete the work if they begin the work at same time?
(RBI Assist. pre 2022)

What will come in place of the question mark (?) in each of the following series?
620 632 608 644 596 ?
(RBI Asst. pre 2022)

What will come in place of the question mark (?) in each of the following series?
15 25 40 65 ? 195
(RBI Assist. Pre 2022)

Average of 10 numbers is 35. If the average of first 5 numbers is 40 and average of last 3 numbers is 22, then what is the average of remaining two numbers?
(RBI Assist. Pre 2019)

Difference between downstream speed and upstream speed is 4 kmph. If speed of boat in still water is 7 times the speed of current, then what is the time taken by the boat to cover 48 km in downstream?
(RBI Assist. pre 2019)

A shopkeeper gives 20% discount on a book and he still earns a profit 33(1/3)% on the book. If cost price of book is Rs. 600, then what is the discount given on the book?
(RBI Assist. pre 2019)

Ratio of present ages of A to B is 4:3. If C is 4 years younger to B and difference between present age of A and B is 4 years, then what is C’s age 10 years hence?
(RBI Assist. Pre 2019)

A mixture of 30 litres contains alcohol and water in ratio 3:7. How much alcohol must be added to this mixture so that the ratio of alcohol and water becomes 2:3?
(RBI Assist. pre 2019)

What will come in the place of question (?) mark?
(12/13) of 143 ÷ 6 – 12 = ?
(RBI Assist. pre 2019)

What will come in the place of question (?) mark?
2^3 × 4^2 ÷ 8 = (2)^?
(RBI Assist. pre 2019)