CBSE VII Maths Set - 3

The number of children in 20 families of a locality is given below:

3, 1, 3, 2, 2, 2, 0, 3, 4, 2, 1, 3, 2, 4, 1, 2, 2, 3, 1, 3.

Which of the following frequency tables shows the correct data?

A)

B)

C)

D)

If then the value of p is ____.

A) 60

B) 20

C) 30

D) 80

A) 145

B) 115

C) 125

D) 165

A) 90^{o}

B) 270^{o}

C) 180^{o}

D) 360^{o}

If two line segments AB and CD are congruent, then it is represented symbolically as ____.

A) AB < CD

B) AB > CD

C) AB ˜ CD

D)

The value of in percentage form is ____.

A) 42 %

B) 40 %

C) 45 %

D) 50 %

The additive inverse of is ____.

A)

B)

C)

D)

Given a line AB, PQ perpendicular to AB and a point C on PQ such that C is at a distance of 5 cm away from AB. A line DE is drawn through C such that DE is parallel to AB. Given below are the steps of construction.

(i) Draw a line AB.

(ii) Join D to C and extend it to E.

(iii) Mark a point C on PQ such that C is at a distance of 5 cm from AB.

(iv) With C as centre and any convenient radius draw arcs on either sides of C such that they intersect PQ at R and S.

(v) With R as centre and a convenient radius draw an arc.

(vi) With S as centre and same radius draw another arc to intersect the previous arc at D.

(vii) Draw a line PQ perpendicular to AB.

The proper order of steps for construction is ____.

A) ii, i , vii, iii, iv, v, vi

B) i, ii, v, vi, vii, iii, iv

C) iii, i, ii, iv, v, vi, vii

D) i, vii, iii, iv, v, vi, ii

The circumference of a circular disc of radius 21 cm is ____.

A) 128 cm

B) 134 cm

C) 130 cm

D) 132 cm

If a = 2 and b = -2, then the value of is ____.

A) 8

B) 6

C) -4

D) 4