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## SSC CGL Tier 1 Aptitude questions answer 31st August 3rd Shift

Below are questions from SSC CGL Tier 1 Aptitude  questions answer 31st August 3rd Shift which have been taken from few best SSC coaching students of Noida. These questions are memory based.

1. If x + 1/x 0,  x2 + 1/x2 = 1  and x3 + 1/x3 = 0 , then the value of ( x + 1/x) ^4 is equal to

Solution (x + 1/x )^4 = (x + 1/x)^3 (x + 1/x)

= (x^3 + 1/ x^3 + 3(x + 1/x ) ) (x + 1/x)

= 3 (x + 1/x)^2

= 3 ( x2 + 1/x2 + 2 )

= 3( 1 + 2 ) = 9

1. If principal of Rs. 3000 amounts to 6000 in 2 years on C.I. , then how much it will amount in 4 years ?

Solution  6000 = 3000(1 + r/100)^2

(1 + r/100)^2 = 2

Amount = 3000(1+ r/100)^4

= 3000((1+ r/100)^2)^2

= 3000*2^2 = 3000*4 = 12000

1. If the marked price of an article is 900 and two successive discounts of 10% and 20% are given, then the selling price of the article is

Solution selling price = 9008010090100

= 9*9*8 = 648

Solutions have been given by teachers of one of best ssc coaching of delhi

1. If 5 man can make 5 mats in 10 days then how many mats can be made by 10 men in 10 days ?

Solution M1 =5, W1 = 5, D1 = 10 days

M2 = 10, W2 = ?, D2 = 10 days

M1 W2 D1  = M2 W1 D2

5*W2*10 = 10*5*10

W2 = 10

1. If 3rd day of a month is TUESDAY , then the 25th day of that month is

Solution since 3 + 7*3 = 24

So 24th day is TUESDAY

Hence 25th day is WEDNESDAY

Directions (6 _ 10) read the pie chart carefully and answer the question below

Marks scored by A,B,C and D in an exam is given by the sector angle and total marks of A,B,C and D are 150

1. Find the average marks of A, B, C and D
2. What is the marks of A
3. What is the ratio of D to the average marks of A,B and C
4. Find the difference between the marks of D and B
5. How much more marks A got than B

Solution complete angle of pie chart = 360

Marks of A = 108360150 = 45

Marks of B = 72360150 = 30

Marks of C = 60360150 = 25

Marks of D = 120360150  = 50

Answer 6 average marks = total marks / no. of  students

= 150 / 4 = 37.5

Answer 7 marks of A = 45

Answer 8  marks of D = 50

Marks of A + B + C = 100

Ratio  = 50 / 100 = 1 : 2

Answer 9 difference between the marks of B and D = 50 – 30 = 20

Answer 10  A – B =  45 – 30 = 15

1. If orthocentre of a triangle lies on one of its side, then the circumcentre of  this triangle lies
1. Inside the triangle
2. Outside the triangle
3. on the other side
4. On the same side