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- Question
What is the sum of first 40 terms of 1 + 3 + 4 + 5 + 7 + 7 + 10 + 9 + ....?
Options- A. 1010
- B. 1115
- C. 1030
- D. 1031
- Correct Answer
- 1030
- 1. If N = 1 + 11 + 111 + 1111 + ... +111111111, then what is the sum of the digit's of N?
Options- A. 45
- B. 18
- C. 36
- D. 5 Discuss
- 2. If A = 232, B = 231+ 230+ 229+ ... + 20 and C = 315+ 314+ 313+ ... + 30 , then which of the following option is TRUE?
Options- A. C > B > A
- B. C > A > B
- C. A > B > C
- D. A > C > B Discuss
- 3. If A = 1 ? 10 + 3 ? 12 + 5 ? 14 + 7 + ... upto 60 terms, then what is the value of A?
Options- A. ? 360
- B. ? 310
- C. ? 240
- D. ? 270 Discuss
- 4. Three numbers are in Arithmetic Progression (AP) whose sum is 30 and the product is 910. Then the greatest number in the AP is
Options- A. 17
- B. 15
- C. 13
- D. 10 Discuss
- 5. What is the sum of the first 11 terms of an arithmetic progression if the 4th term is 11 and the 7th term is -4?
Options- A. -75
- B. 55
- C. 11
- D. 100 Discuss
- 6. Insert the missing number. 7, 26, 63, 124, 215, 342, (....)
Options- A. 391
- B. 421
- C. 481
- D. 511 Discuss
- 7. Find the odd man out. 41, 43, 47, 53, 61, 71, 73, 81
Options- A. 41
- B. 61
- C. 71
- D. 81 Discuss
- 8. Insert the missing number. 8, 7, 11, 12, 14, 17, 17, 22, (....)
Options- A. 20
- B. 22
- C. 24
- D. 27 Discuss
- 9. Find the odd man out? 396, 462, 572, 427, 671, 264.
Options- A. 671
- B. 462
- C. 427
- D. 264 Discuss
- 10. Find the odd man out. 2, 5, 10, 17, 26, 37, 50, 64
Options- A. 50
- B. 37
- C. 26
- D. 64 Discuss
Numbers problems
Search Results
Correct Answer: 45
Correct Answer: C > A > B
Correct Answer: ? 270
Correct Answer: 13
Correct Answer: 11
Correct Answer: 511
Explanation:
Numbers are (23 - 1), (33 - 1), (43 - 1), (53 - 1), (63 - 1), (73 - 1) etc.
So, the next number is (83 - 1) = (512 - 1) = 511.
Correct Answer: 81
Explanation:
Each of the numbers except 81 is a prime number.
Correct Answer: 20
Explanation:
There are two series (8, 11, 14, 17, 20) and (7, 12, 17, 22) increasing by 3 and 5 respectively.
Correct Answer: 427
Explanation:
Here the given series is 396, 462, 572, 427, 671, 264.
In all the terms, the middle digit is the sum of first and third digit except 427.
So the Odd number in the given series is 427.
Correct Answer: 64
Explanation:
(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1
But, 64 is out of pattern.
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