Walking at 4 km an hour, a person reaches his office 5 minutes late. If he walks at 5 km an hour, he will be 4 minutes too early. Then the distance of his office from his residence is ____.
A) 5 km
B) 3 km
C) 2 km
D) 1 km
The three angles of a quadrilateral are equal. If the measure of the fourth angle is 120o, then the measure of each of the equal angles is ____.
To construct a perpendicular to a line AB from an external point P, the steps involved are written below:
(i) With P as centre, draw an arc of a suitable radius which cuts AB as points C and D.
(ii) With C and D as centres, draw arcs of equal radii and let these arcs intersect each other at point Q.
(iii) Let PQ cut AB at point O.
(iv) Join P and Q.
The correct sequence of the construction is ____.
A) iii, ii, i, iv
B) i, iii, ii, iv
C) i, ii, iv, iii
D) ii, i, iii, iv
The number of children in 20 families are given below:
2, 1, 3, 4, 1, 2, 4, 1, 3, 5, 2, 2, 1, 3, 1, 2, 2, 2, 3, 5
The correct frequency distribution table is ____.
The difference of the smallest three-digit number and the smallest two-digit number is a perfect square.
The smallest number by which 2560 must be multiplied so that the product is a perfect cube is ____.
In a two-digit number, the digit in the units place is three times the digit in the tens place, and sum of the digits is equal to 8. Then the number is ____.
If Naresh takes 150 steps in walking a distance of 125 metres, then the distance covered by him in 360 steps is ____ .
A) 275 m
B) 300 m
C) 320 m
D) 310 m