Sherry's math test had 100 problems, 40 arithmetic, 30 algebra, 30 geometry problems. Although he answered 30% of arithmetic, 40% of algebra and 70% of geometry problems correctly, still he got less then 50% marks. How many more questions he would have to answer more to get passed.

Arithmetic: 30% of 40 = 12

Algebra : 40% of 30 = 12

Geometry : 70% of 30=21

Total correct = 12+12+21=45

50-40=5 marks needed to pass.

.
Look at this series: 2, 6, 18, 54, ...

What number should come next?

What number should come next?

This is a simple multiplication series.

Each number is 3 times more than the previous number.

The series is 2, 6, 18, 54, . . .

Rule = (1st number x 3 = 2nd number), (2nd number x 3 = 3rd number)....

Now

(2), (2 x 3 = 6), (6 x 3 = 18), (18 x 3 = 54), (54 x 3 = 162)...

So the answer is 162..

A + B means A is the father of B.

A -B means A is the wife of B.

A x B means A is the brother of B.

A Ã·B means A is the daughter of B.

If P- R+Q , which of the following statements is true?

P - R + Q means P is the wife of R who is the father of Q .I.e. is the mother of Q..

A + B means a is the son of B.

A- B means A is the waife of B.

A x B means A is the brother of B.

A Ã· B means A is the mother of B.

A= B means A is the sister of B.

What does P + R - Q means?

P + R -Qmeans, p is the son of a R who is the wife of Q i.e. Q is the father of P.

Hence, the answer is (a).

.
In following question,a number series is given with one term missing. Choose the correct alternative

4 , 9 , 5 , 12 , 7 , 15 , 8 , x , 10.

4 , 9 , 5 , 12 , 7 , 15 , 8 , x , 10.

The given sequence is a combination of two series :

4 , 5 , 7 , 8 , 10 and 9 , 12 , 15 , (...).

the missing term is 18..