**Directions :** The pie chart given below shows the marks obtained by a student in an examination. If the total marks obtained by him in the examination were 540, answer the questions given below based on this pie charts.

**Question 1:Â **In which subject did the student obtain 105 marks?

(a) Maths

(b) Social Studies

(c) Science

(d) Hindi

**Question 2:** What is the central angle corresponding to Science?

(a) 40Â°

(b) 80Â°

(c) 75Â°

(d) 60Â°

**Question 3**: How many more marks were obtained by the student in maths than those in Hindi?

(a) 30

(b) 20

(c) 10

(d) 40

**Question 4:** How many marks were obtained by the student in Science?

(a) 130

(b) 120

(c) 125

(d) 140

### Answers and Explanations

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sir i have a ques. are u available now??

Yes Razda, go ahead with your doubt.

a+b is a prime no ab is equal to 84 then value of a+b can be assumed as?

Let’s write down 84 as a product of two factors:

Case -1: 42, 2: 42 x 2

Case-2: 21; 2, 2: 21 x 4

Case-3: 7; 3, 2, 2: 7 x 12

a + b=19 is prime only in the last case

quad eqn whose root is reciprocal of roots of 3x^2+4x+2

Let’s write down 84 as a product of two factors:

Case -1: 42, 2: 42 x 2

Case-2: 21; 2, 2: 21 x 4

Case-3: 7; 3, 2, 2: 7 x 12

a + b=19 is prime only in the last case

how many four digit no. divisible by 9 can be formed using exactly two digits

largest no. which leave rem 4;6;2 when divided by 460;690 and 990

kindly help asap sir..

i have to take a test