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- Question
If the sum and diference of two numbers are 20 and 8 respectively, then the difference of their squares is :
Options- A. 120
- B. 140
- C. 160
- D. 180
- Correct Answer
- 160
ExplanationLet the numbers be x and y. Then, x + y = 20 and x - y = 8.
x^2 - y^2 = (x + y) (x - y) = 20 x 8 = 160.
- 1. Find the odd man out 1 4 9 16 22 36?
Options- A. 9
- B. 16
- C. 22
- D. 36 Discuss
- 2. In the following question, select the odd letters from the given alternatives.
Options- A. IMOR
- B. ORIL
- C. UXCF
- D. ADWZ Discuss
- 3. If a retailer offers a discount of 20% on the marked price of his goods and thus ends up selling at cost price, what was the % mark up?
Options- A. 20
- B. 25
- C. 30
- D. 40 Discuss
- 4. If a2+b2c2 = b2+c2a2 = c2+a2b2 = 1k k?0 then k =
Options- A. 2
- B. 1
- C. 0
- D. 1/2 Discuss
- 5. Find the next term for the series given below: 5G, 6H, 7I, 8J , ?
Options- A. 14K
- B. 9K
- C. 10K
- D. 12K Discuss
- 6. What is the next number in the given Number Series? 5, 24, 94, 279, ?
Options- A. 587
- B. 554
- C. 489
- D. 499 Discuss
- 7. Select the odd word/letters/number/number pair from the given alternatives.
Options- A. Perpendicular
- B. Base
- C. Hypotenuse
- D. Radius Discuss
- 8. The population of a town increases by 5% in the first year, by 6% in the second year and by 8% in third year. The present population of town is 120204. What was the population of the town 3 years ago?
Options- A. 102000
- B. 100000
- C. 98000
- D. 101204 Discuss
- 9. Profit of Rs 728000 has to be divided among three partners Amir, Balaraj and Charan in the ratio 7:5:4. How much share (in Rs) does Charan get?
Options- A. 227500
- B. 318500
- C. 91000
- D. 182000 Discuss
- 10. The value of sin?1+cos? + sin?1-cos?
Options- A. 2sin?
- B. 2cos?
- C. 2sec?
- D. 2cosec? Discuss
More questions
Correct Answer: 22
Explanation:
In the given series 1 4 9 16 22 36
1 = 1 x 1
4 = 2 x 2
9 = 3 x 3
16 = 4 x 4
25 = 5 x 5 (Not 22)
36 = 6 x 6
Hence, the odd man in the series is 22.
Correct Answer: IMOR
Correct Answer: 25
Correct Answer: 1/2
Correct Answer: 9K
Correct Answer: 554
Explanation:
The given number series follows a pattern that
5 x 5 ? 1 = 24
24 x 4 ? 2 = 94
94 x 3 ? 3 = 279
279 x 2 ? 4 = 554
Correct Answer: Radius
Correct Answer: 100000
Correct Answer: 182000
Correct Answer: 2cosec?
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