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Q:
In an examination, a student was asked to find 3/11 of a certain number, by mistake, he found 3/4 of it. His answer was 315 more than the correct answer. The given number is –
878 0

Answer : 2. "660"

Q:
The product of the zeroes of the quadratic polynomial x²+7x+ 10 is
433 0

Answer : 2. "10"

Q:
What is the smallest digit that must be added to the product 5786 × 5784 to make it a perfect square?
625 0

Answer : 3. "5"

Q:
When (6767 +67) is divided by 68, the remainder is-
569 0

Answer : 3. "66"
Explanation :
(6767+ 67) = 67(6766 + 166)
As 66 is an even number
We know 6766 is an even number
We know (6766 + 1) is perfectly divisible by (67 + 1)
i.e. 68
We know The remainder = 66
(6767+ 67) = 67(6766 + 166)

Q:
The sum of the squares of two natural consecutive odd numbers is 394. The sum of the numbers is –
416 0

Answer : 4. "28"
Explanation :
Let the consecutive odd numbers be x and (x+2)
We know that x2 + (x + 2)2 = 394
We know x2 + x2 + 4x + 4 = 394
We know 2 x2 +4x – 390 = 0
We know x2 + 2x – 195 = 0
We know (x +15) (x-13) = 0
We know x = 13
We know Required sum = 13 +15 =28

Q:
The value of (81)3.6 * (9)2.7/ (81)4.2 * (3) is __
570 0

Answer : 3. "9"
Explanation :
(81)3.6 * (9)2.7/(81)4.2 * (3) = (3)14.4 * (3)5.4/(3)16.8 * (3)
= 314.4+5.4-16.8-1
= 32
= 9

Q:
The product of 2 numbers is 1575 and their quotient is 9/7. Then the sum of the numbers is –
467 0

Answer : 3. "80"
Explanation :
Let the numbers be x and y .
We know xy = 1575
And x/y = 9/7
We know xy/x/y = 1575/9/7
We know y2 = 1225
We know y = 35 and x = 45
We know The sum of the numbers = 45+35
= 80

Q:
Find the greatest value of (a + b) such than an 8-digit number 4523a60 b is divisible by 15.
546 0

Q: In an examination, a student was asked to find 3/11 of a certain number, by mistake, he found 3/4 of it. His answer was 315 more than the correct answer. The given number is – 878 06082c8105027727e2faba1df

Answer : 2. "660"

Q: The product of the zeroes of the quadratic polynomial x2+7x+ 10 is 433 063108e9cd9ac741324b7c0e4

Answer : 2. "10"

Q: What is the smallest digit that must be added to the product 5786 × 5784 to make it a perfect square? 625 0630ded3f4e3bf85cbe748a92

Answer : 3. "5"

Q: When (6767 +67) is divided by 68, the remainder is- 569 06303364629cb46304423ee34

Answer : 3. "66" Explanation :(6767+ 67) = 67(6766 + 166)As 66 is an even numberWe know 6766 is an even numberWe know (6766 + 1) is perfectly divisible by (67 + 1)i.e. 68We know The remainder = 66(6767+ 67) = 67(6766 + 166)

Q: The sum of the squares of two natural consecutive odd numbers is 394. The sum of the numbers is – 416 06303357ffef7996822e8f226

Answer : 4. "28" Explanation :Let the consecutive odd numbers be x and (x+2)We know that x2 + (x + 2)2 = 394We know x2 + x2 + 4x + 4 = 394We know 2 x2 +4x – 390 = 0We know x2 + 2x – 195 = 0We know (x +15) (x-13) = 0We know x = 13We know Required sum = 13 +15 =28

Q: The value of (81)3.6 * (9)2.7/ (81)4.2 * (3) is __ 570 063033460c3bfb21b4ac229c4

Answer : 3. "9" Explanation :(81)3.6 * (9)2.7/(81)4.2 * (3) = (3)14.4 * (3)5.4/(3)16.8 * (3)= 314.4+5.4-16.8-1= 32= 9

Q: The product of 2 numbers is 1575 and their quotient is 9/7. Then the sum of the numbers is – 467 0630333c0c3bfb21b4ac2185c

Answer : 3. "80" Explanation :Let the numbers be x and y .We know xy = 1575And x/y = 9/7We know xy/x/y = 1575/9/7We know y2 = 1225We know y = 35 and x = 45We know The sum of the numbers = 45+35= 80

Q: Find the greatest value of (a + b) such than an 8-digit number 4523a60 b is divisible by 15. 546 062f1220255c5be584101a5cb

Answer : 1. "13 "

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Q:
In an examination, a student was asked to find 3/11 of a certain number, by mistake, he found 3/4 of it. His answer was 315 more than the correct answer. The given number is –
878 0

Q:
The product of the zeroes of the quadratic polynomial x²+7x+ 10 is
433 0

Q:
What is the smallest digit that must be added to the product 5786 × 5784 to make it a perfect square?
625 0

Q:
When (6767 +67) is divided by 68, the remainder is-
569 0

Answer : 3. "66"
Explanation :
(6767+ 67) = 67(6766 + 166)
As 66 is an even number
We know 6766 is an even number
We know (6766 + 1) is perfectly divisible by (67 + 1)
i.e. 68
We know The remainder = 66
(6767+ 67) = 67(6766 + 166)

Q:
The sum of the squares of two natural consecutive odd numbers is 394. The sum of the numbers is –
416 0

Answer : 4. "28"
Explanation :
Let the consecutive odd numbers be x and (x+2)
We know that x2 + (x + 2)2 = 394
We know x2 + x2 + 4x + 4 = 394
We know 2 x2 +4x – 390 = 0
We know x2 + 2x – 195 = 0
We know (x +15) (x-13) = 0
We know x = 13
We know Required sum = 13 +15 =28

Q:
The value of (81)3.6 * (9)2.7/ (81)4.2 * (3) is __
570 0

Answer : 3. "9"
Explanation :
(81)3.6 * (9)2.7/(81)4.2 * (3) = (3)14.4 * (3)5.4/(3)16.8 * (3)
= 314.4+5.4-16.8-1
= 32
= 9

Q:
The product of 2 numbers is 1575 and their quotient is 9/7. Then the sum of the numbers is –
467 0

Answer : 3. "80"
Explanation :
Let the numbers be x and y .
We know xy = 1575
And x/y = 9/7
We know xy/x/y = 1575/9/7
We know y2 = 1225
We know y = 35 and x = 45
We know The sum of the numbers = 45+35
= 80

Q:
Find the greatest value of (a + b) such than an 8-digit number 4523a60 b is divisible by 15.
546 0