revision-1 cbse maths

1.

Fill in the Blank

3 mins

1 pt

Using Euclid’s division algorithm, find the HCF of 2160 and 2520.

2.

Multiple Choice

45 sec

1 pt

The next two terms of the sequence 4,7,10,13 are

16 and 19

15 and 19

16 and 18

15 and 18

3.

Multiple Choice

2 mins

1 pt

Find the 22nd term of the following sequence:
5, 8, 11, ...

14

68

63

71

4.

Multiple Choice

30 sec

10 pts

Probability is ...

the chance that some event will occur.

a game that involves coins.

a guarantee.

5.

Multiple Choice

30 sec

10 pts

Probability can be written as ...

a fraction

a decimal

a percent

all of the above

6.

Multiple Choice

30 sec

10 pts

What is the probability of spinning the spinner and having it land on RED?

33%

50%

12%

7.

Multiple Choice

45 sec

10 pts

What is the probability of flipping a coin and getting heads?

1/2

1/3

1/4

Never, Tails never fails.

8.

Multiple Choice

45 sec

1 pt

What is the probability of spinning an even number?

16 2/3%

33 1/3%

50%

75%

9.

Multiple Choice

1 min

1 pt

What is the probability of pulling a red marble out of a jar of marbles that have 10 green marbles, 7 red marbles and 3 blue marbles?

1/7

7/20

7/10

3/10

10.

Multiple Choice

1 min

1 pt

If you were to roll the die one time what is the probability of it landing on a 2?

2 out of 6

2 out of 2

1 out of 6

1 out of 1

11.

Multiple Choice

5 mins

1 pt

Solve:

3x - y = 11

x + y = 5

x = 4

y = 1

x = 4

y = -1

x = -4

y = 1

x = -4

y = -1

12.

Multiple Choice

30 sec

1 pt

What is the solution?

No solution

(0, 2)

(0, -4)

(3, -3)

13.

Multiple Choice

45 sec

1 pt

Find the simultaneous solution

(6, 8)

(8, 6)

(-6, 8)

No solution

14.

Multiple Choice

3 mins

1 pt

Convert x²- 9x + 20 to factored form and solve.

(x-10)(x+2); x = -2, 10

(x+4)(x+5); x = -5, -4

(x-4)(x-5); x = 4, 5

Not factorable

15.

Multiple Choice

30 sec

1 pt

ax²+bx+c=0 is the standard form of a quadratic equation.

True

False

16.

Multiple Choice

3 mins

1 pt

The solutions of the quadratic equation
x²+2x-15=0 are

x = 3 or x = 5

x = 5 or x = -3

x = -5 or x = 3

x = -3 or x = -5

17.

Multiple Choice

1 min

1 pt

x²- 25

( x + 5 ) ( x - 5 )

( x - 5 ) ( x - 5 )

( x + 5 ) ( x + 5 )

Prime

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