Quant Quiz

Directions (Q1-Q5) : What should come in the place of question mark(?) in the following numbers series :


Q1. 4, 18, 48, 100, 180, 294, ?
1) 448 
2) 398 
3) 424 
4) 456 
5) None of these

Q2. 3, 4, 10, 33, 136, 685, ?
1) 3726 
2) 4116 
3) 3928
4) 4204 
5) None of these

Q3. 7, 8, 12, 21, ?, 62
1) 35 
2) 33 
3) 42 
4) 37 
5) 43

Q4. 7, 8, 24, 105, 361, ?
1) 676 
2) 986 
3) 1068 
4) 828 
5) None of these

Q5. 6, 16, 9, 13, 12, 10, ?, ?
1) 15, 7 
2) 17, 6 
3) 21, 11 
4) 16, 5 
5) None of these

Q6. Pradeep sold an item for Rs. 3200 and incurred a loss of 20%. At what price should he have sold the item to have gained a profit of 20 % ? (in Rs.)
1) Rs. 3600 
2) Rs. 4500 
3) Rs. 4800 
4) Rs. 4400 
5) None of these

Q7. Sohan invested Rs. 15000 at interest @ 10% p.a. for one year. If the interest is compounded every six months. What amount will Sohan get at the end of the year ?
1) Rs. 16525.50 
2) Rs. 16537.50 
3) Rs. 16827 
4) Rs. 17150 
5) None of these

Q8. The average age of a man and his son is 54 years. The ratio their present ages is 23 : 13 respectively. What will be ratio of their ages after 6 years ?
1) 2 : 1 
2) 7 : 3 
3) 8 : 5 
4) 3 : 2 
5) None of these

Q9. A sum of the money is divided among A, B, C and D in the ratio of 4 : 5 : 7 : 11 respectively. If the share of C is Rs. 1351, then what is the total amount of money of B and D together ?
1) Rs. 2895 
2) Rs. 2656 
3) Rs. 3088 
4) Rs. 3102 
5) None of these

Q10. The difference between the 73 % of the number and 58 % of the same number is 960. What is the 22% of that number ?
1) 1442 
2) 1408 
3) 1506 
4) 1396 
5) None of these





Answers with solutions:
Q1 – 1 
Trick: 2² x1, 3² x2, 4² x3, 5² x4….

Q2 – 2 
Trick: x1 +1, x2 +2, x3 +3, x4 +4….

Q3 – 4
Trick: +1², +2², +3², +4²….

Q4 – 2
Trick: +1^4, +2^4, +3^4, +4^4…..

Q5 – 1
Trick: Two seperate series of +3,+3,+3… and -3,-3,-3…

Q6 – 3
Solution: Req. price = (3200 x 100 x 120) / (80 x 100) = Rs. 4800

Q7 – 2
Solution: Req. amount = 15000[1 + (10/2)²/100]² = Rs. 16537.50

Q8 – 5
Solution: Req. Ratio = (69 + 6)/(39 + 6) = 5 : 3

Q9 – 3
Solution: Req. amount = [(4+5+7+11)/7] x 1351 x [(5+11)/27] = Rs. 3088

Q10 – 2
Solution: Req. number = 960/(73-58) x 100 x 22/100 = 1408