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Question 1 of 10
1. Question
2 points
The average attendance of a college for the first three days of a week is 325 , and for first four days it is 320. How many present on the fourth day ?
Correct
Ans : ( a )
Sol:
Required answer
= 320 x 4 – 325 x 3
= 305
Incorrect
Ans : ( a )
Sol:
Required answer
= 320 x 4 – 325 x 3
= 305
Question 2 of 10
2. Question
2 points
The average of 8 reading is 24.3 out of which the average of first two is 18.5 and that of next three is 21.2 . If the sixth reading is 3 less than seventh and 8 less than eighth , what is the sixth reading ?
Correct
Ans : ( c )
Sol :
Let 6th reading = x .
then , 7th = ( x + 3 )
and
8th = ( x + 8 )
18.5 + 3 × 21.2 + X + ( X + 3 ) + ( X +8 )
= 8 x 24.3
Or
37 + 63.6 + 3X + 11 = 194.4
or
X = 27.6
Incorrect
Ans : ( c )
Sol :
Let 6th reading = x .
then , 7th = ( x + 3 )
and
8th = ( x + 8 )
18.5 + 3 × 21.2 + X + ( X + 3 ) + ( X +8 )
= 8 x 24.3
Or
37 + 63.6 + 3X + 11 = 194.4
or
X = 27.6
Question 3 of 10
3. Question
2 points
Average of 5 consecutive odd numbers is 39 . Find the product of first and last number .
Correct
Ans : ( c )
Sol :
Numbers are 35 , 37 , 39 , 41 , 43 .
So required answer = 35 × 43
= 1505
Incorrect
Ans : ( c )
Sol :
Numbers are 35 , 37 , 39 , 41 , 43 .
So required answer = 35 × 43
= 1505
Question 4 of 10
4. Question
2 points
The average of the first and the second of three numbers is 15 more than the average of the second and the second and the third of these numbers . What is the difference between the first and the third of these three numbers ?
Correct
Ans : ( d )
Sol : ( x + y )/2 = [( Y + z )/2] +15 ⇒X – Z = 30
Incorrect
Ans : ( d )
Sol : ( x + y )/2 = [( Y + z )/2] +15 ⇒X – Z = 30
Question 5 of 10
5. Question
2 points
Sumitra has an average of 56 % in her first 7 examinations . How much should she get in her eighth examination to obtain an average of 60 % on 8 examinations ?
Correct
Ans : ( d )
Sol : Since the weight age of eighth examination is not known , hence cannot be determined .
Incorrect
Ans : ( d )
Sol : Since the weight age of eighth examination is not known , hence cannot be determined .
Question 6 of 10
6. Question
2 points
A man engaged a servant on the condition that he would pay him Rs . 710 and a uniform after a year service . He served only for 8 months and received uniform and Rs . 460 . Find the price of the uniform ?
Correct
Ans: a
Incorrect
Ans: a
Question 7 of 10
7. Question
2 points
In a division sum , the divisor is 12 times the quotient and 5 times the remainder . If the remainder is 48 , then the dividend is ?
Correct
Ans: d
Incorrect
Ans: d
Question 8 of 10
8. Question
2 points
A certain number when divided by 81 leaves a remainder 53. What is the remainder if the same number be divided by 27 ?
Correct
Ans: c
Incorrect
Ans: c
Question 9 of 10
9. Question
2 points
A certain number when divided by 69 leaves a remainder 19. What is the remainder when the same number is divided by 23 .
Correct
Ans: a
Incorrect
Ans: a
Question 10 of 10
10. Question
2 points
How many numbers lying between 300 and 900 are divisible by 17?
