Square , Square Root, Cube, Cube Root | IIT Foundation Mathematics
( 1 ) Which of the following is not a perfect cube
A) 1 B) 8 C) 64 D) 100
( 2 ) By which smallest natural number 432 must be multiplied so as to make the product a perfect cube
A) 2 B) 4 C) 8 D) 6
( 3 ) The smallest natural by which 1536 must be divided to obtain a perfect cube is
A) 2 B) 3 C) 4 D) 6
( 4 ) Which of the following is a perfect cube
A) 216 B) 340 C) 100 D) 200
( 5 ) What will be the unit digit of the cube of a number ending with 3.
A) 3 B) 9 C) 7 D) 1
( 6 ) A cuboid has dimensions 5 cm, 3 cm, 5 cm. how many such cuboid will be needed to form a cube.
A) 30 B) 45 C) 14 D) 60
( 7 ) What is the volume of cube whose edge is 5 cm
A) 5 cubic cm B) 25 cubic cm
C) 50 cubic cm D) 125 cubic cm
( 8 ) The cube root of 343 is
A) 49 B) 7 C) 14 D) 3
( 9 ) What will be the unit digit of the cube root of a cube number ends with 3 ?
A) 3 B) 76 C) 7 D) 9
( 10 ) 11 is the cube root of
A) 121 B) 1331 C) 1441 D) 1341
( 11 ) The number of digits in the cube root of a 6 digit number is
A) 2 B) 3 C) 4 D) 5
( 12 ) How many zeroes will be there in the cube root of 64000 ?
A) 0 B) 2 C) 3 D) 1
( 13 ) How many zeroes will be there in the cube root of 1600 ?
A) 0 B) 1 C) 2 D) cube root does not exist
( 14 ) The number of zeroes at the end of 134 !
A) 30 B) 34 C) 31 D) 32
( 15 ) What is the smallest number by which 13,500 is to be multiplied to make the product a perfect cube
A) 2 B) 3 C) 4 D) 5
( 16 ) Which of the following are pythagorean triplets
A) ( 3, 4, 5 ) B) (10, 24 ,26)
C) ( 7, 8, 9 ) D) ( 5, 7, 25 )
ANSWERS
1) D 2) B 3) B 4) A
5) C 6) B 7) D 8) B 9) C 10 ) B 11) A 12) D 13) D 14) D 15) A 16) A
