# A set of consecutive positive integers beginning with 1 is written on the blackboard. A student came along and erased one number. The average of the remaining numbers is 35717. What was the number erased

1.  7

2.  8

3.  9

4.  None of these

4

None of these

Explanation :
No Explanation available for this question

# Let n be the number of different 5-digit numbers, divisible by 4 with the digits 1, 2, 3, 4, 5 and 6, with no digit being repeated. What is the value of n

1.  144

2.  168

3.  192

4.  None of these

4

192

Explanation :
No Explanation available for this question

# Three math classes: X, Y, and Z, take an algebra test The average score in class X is 83 The average score in class Y is 76 The average score in class Z is 85 The average score of all sudents in classes X and Y together is 79 The average score of all students in classes Y and Z together is 81 What is the average for all the three clalsses

1.  81

2.  81.5

3.  82

4.  84.5

4

81.5

Explanation :
No Explanation available for this question

# In the diagram, ABCD is a rectangle with AE=EF=FB. What is the ratio of the area of the triangle CEF and that of the rectangle

1.  1/6

2.  1/8

3.  1/9

4.  None of these

4

1/6

Explanation :
No Explanation available for this question

# A can complete a piece of work in 4 days. B takes double the time taken by A. C takes double that of B, and D takes double that of C to complete the same task. They are paired in groups of two each. One pair takes two-thirds the time needed by the second pair to complete the work. Which is the first pair

1.  A, B

2.  A, C

3.  B, C

4.  A, D

4

A, D

Explanation :
No Explanation available for this question

# In a 4-digit number, the sum of the first two digits is equal to that of the last two digits. The sum of the first and last digits is equal to the third digit. Finally, the sum of the second and fourth digits is twice the sum of the other two digits. What is the third digit of the number

1.  5

2.  8

3.  1

4.  4

4

5

Explanation :
No Explanation available for this question

# A college has raised 75% of the amount it needs for a new building by receiving an average donation of Rs 600 from the people already solicited. The people already solicited represent 60% of the total people the college will ask for donations. If the college is to raise exactly the amount needed for the new building, what should be the average donation from the remaining people to be solicited

1.  Rs 300

2.  Rs 250

3.  Rs 400

4.  Rs 500

4

Rs 500

Explanation :
No Explanation available for this question

# A, B and C went to buy ration from a wholesale market. They had a combined sum of Rs 900. A spent 80%, B spent 70% and C spent 75% of their respective amounts. Now the ratio of amounts left with them is 4 : 9 : 10. Find the ratio of amounts they had in the beginning

1.  2 : 4 : 3

2.  3 : 4 : 2

3.  5 : 2 : 2

4.  2 : 3 : 4

4

2 : 3 : 4

Explanation :
No Explanation available for this question

# A red light flashes 3 times per minute and a green light flashes 5 times in two minutes at regular intervals. If both lights start flashing at the same time, how many times do they flash together in each hour

1.  30

2.  24

3.  20

4.  60

4

30

Explanation :
No Explanation available for this question

1.  786

2.  534

3.  696.5

4.  684

4