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- Question
In math questions answers each questions are solved with explanation. The questions are based from different topics. Care has been taken to solve the questions in such a way that students can understand each and every step 1. Which is greater than 4? (a) 5, (b) -5, (c) -1/2, (d) -25.
Options- A. 5
- B. 20
- C. 2
- D. 3
- Correct Answer
- 5
ExplanationSolution:
5 greater than 4.
Answer: (a) - 1. Two bus tickets from city K to L and three tickets from city K to M cost Rs. 77, but three tickets from city K to L and two tickets from city K to M cost Rs. 73. What are the fares for cities L and M from K ?
Options- A. Rs. 13 and Rs. 17
- B. Rs. 17 and Rs. 19
- C. Rs. 23 and Rs. 17
- D. Rs. 13 and Rs. 19 Discuss
- 2. If you write down all the numbers from 1 to 100, then how many times do you write 4 ?
Options- A. 11
- B. 20
- C. 17
- D. 14 Discuss
- 3. If x / y is an integer, which of the following statements need NOT always be true?
Options- A. both x and y are integers
- B. only x is a integer
- C. both are negative
- D. none Discuss
- 4. If a positive integer n, divided by 5 has a remainder 2, which of the following must be true?
Options- A. n is odd
- B. n + 1 cannot be a prime number
- C. (n + 2) divided by 7 has remainder 2
- D. n + 3 is divisible by 5 Discuss
- 5. 854*854*854-276*276*276854*854+854*276+276*276=?
Options- A. 546
- B. 578
- C. 607
- D. None of these Discuss
- 6. Which is the correct ascending order of the given numbers?
Options- A. 1/3, 4/15, 0.33
- B. 1/3, 0.33, 4/15
- C. 4/15, 0.33, 1/3
- D. 0.33, 4/15, 1/3 Discuss
- 7. What will come in place of the question mark in the series below? 7, 4.5, 5.5, 12, 49, ?
Options- A. 393
- B. 396
- C. 354
- D. 367 Discuss
- 8. 10 is added to a certain number, the sum is multiplied by 7, the product is divided by 5 and 5 is subtracted from the quotient. The remainder left is half of 88. What is the number?
Options- A. 21
- B. 20
- C. 25
- D. 30 Discuss
- 9. How many numbers are there from 700 to 950 (including both) which are neither divisible by 3 nor by 7?
Options- A. 107
- B. 141
- C. 144
- D. 145 Discuss
- 10. Find the square root of 15625.
Options- A. 125
- B. 145
- C. 150
- D. 135 Discuss
Numbers problems
Search Results
Correct Answer: Rs. 13 and Rs. 17
Explanation:
If fares for cities L and M from K are x and y respectively, then
2x + 3y = 77 or 6x + 9y = 231...(1)
3x + 2y = 73 or 6x + 4y = 146...(2)
subtracting 2 from 1, we get
5y = 85
y = Rs. 17 => x = Rs. 13
Correct Answer: 20
Explanation:
4, 14, 24, 34, 44, 54, 64, 74, 84, 94 => has 11 number of (4's)
40, 41, 42, 43, 45, 46, 47, 48, 49 => has 9 number of (4's)
So, totally (11 + 9 = 20) number of 4's in 1 to 100.
Correct Answer: both x and y are integers
Explanation:
In case (A), x and y could, for example, both be equal fractions and x/y would be an integer.
Correct Answer: n + 3 is divisible by 5
Explanation:
You can find the integers which when divided by 5 have a remainder 2 by adding 2 to all multiples of 5. So we have n = 7 , 12, 17, 22 etc.
From this series we can see that n does not have to be odd.
Also n + 1 can be a prime because, for example, 12 + 1 = 13
And (n + 2) / 7 has a remainder 2 in some cases but not all.
Remember the question asks us for what MUST be true, and we see that none of the statements are true in all cases. However, adding 3 to any of the values of n will always give a multiple of 5.
Correct Answer: 578
Explanation:
Given exp . is like this
so ans = 854 - 276 = 578
Correct Answer: 4/15, 0.33, 1/3
Correct Answer: 393
Explanation:
Ans.
4.5 = 7 x 0.5 + 1
5.5 = 4.5 x 1 + 1
12 = 5.5 x 2 + 1
49 = 12 x 4 + 1
? = 49 x 8 + 1, i.e. ? = 393
Correct Answer: 25
Explanation:
Let the number be x
When 10 is added, number = x + 10
When 7 is multiplied, number = 7 X (x + 10)
According to question,
?[7 X (x+10) / 5] ?5 = 44
?7x + 70 = 49 X 5
?x + 10 = 35,
?x = 25
Correct Answer: 144
Correct Answer: 125
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