Subject

Mathematics

Class

TET Class 12

Pre Boards

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Sample Papers

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 Multiple Choice QuestionsMultiple Choice Questions

21.

A coin is tossed 10 times and the outcomes are observed as
H, T, H, T, T, H, H, T, H, H
(H is Head; T is Tail)
What is the probability of getting Head?

  • 45

  • 25

  • 15

  • 35


D.

35

Given, outcomes are
H, T, H, T, T, H, H, T, H, H
Number of favorable outcomes, n(E)= 6
Total number of possible outcomes, n(S) = 10

Therefore, Required probability=n(E)n(S)=610=35


22.

The numerical expression 37+-78=2556 shows that

  • rational numbers are closed under subtraction

  • rational numbers are closed under multiplication

  • rational numbers are closed under division

  • rational numbers are closed under addition


D.

rational numbers are closed under addition


23.

If 574×57-3=575x-2 ,then x is equal to

  • 25

  • 35

  • 45

  • 15


B.

35

Given, 574×57-3=575x-2

    574-3575x-2   am×an=am+n  

on comparing we get,

1=5x-2

5x=3

x=35


24.

Given below is a data set of temperatures (in oC)
-6,-8,-2,3, 2, 0,5, 4, 8.

What is the range of the data?

  • 16 oC

  • 18 oC

  • 10 oC

  • 0 oC


A.

16 oC

Rangle = maximum value - minimum value

8-(-8)=8+8=16


25.

The value of 91+70+121 is

  • 10

  • 11

  • 12

  • 9


A.

10

Given, 91+70+121

91+70+11      121 =11

=91+81

=91+9                  81  = 9 

=91+9

=100

10       100 =10 

 


26.

Which one of the following 3D shapes does not have a vertex?

  • Prism

  • Cone

  • Sphere

  • Pyramid


C.

Sphere


27.

A geometric representation, showing the relationship between a whole and its part, is

  • pie chart

  • pictograph

  • bar graph

  • histogram


A.

pie chart


28.

If q is the square of a natural number p, then p is

  • the square root of q

  • equal to q

  • greater than q

  • the square of q


A.

the square root of q

If p2 = q, then p = q


29.

Let a, b, c be three rational numbers, where a=35, b= 23 and c =-56, which one of the following is true?

  • a÷b+c=b÷a+c

  • a+b+c =c +(a+b)

  • a-b-c=c-(a-b)

  • a×b+c=b×a+c


B.

a+b+c =c +(a+b)

Consider, a+(b+c) = c+(a+b)

35+23-56=-56+35+23

35+4-56=-56+9+1015

36-16=-56+1915

18-530=-25+3830

13=13


30.

In a park, 784 plants are arranged, so that number of plants in a row is same as the number of rows. The number of plants in each row is

  • 28

  • 38

  • 48

  • 18


A.

28

Required number of plants in each row

=784

=2×2¯×2×2¯×7×7¯

2×2×7

28