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Whole numbers mca - cseet QT

Question 1: From blew number which number is whole number?

(a) 4

(b) 5/2

(c) 3.5

(d) – 2

Answer is (a) 4 because whole no. are like this 0, 1, 2, 3,– so on

Question 2: Write the successor at following number 508 –

(a) 507

(b) 510

(c) 508

(d) 509

Answer is (d) 509 508= (508+1) = 509 we calculate like this successors.

Question 3: Write the predesors at following number 989 –

(a) 980

(b) 990

(c) 988

(d) 987

Answer: (c) 988 989= (989-1) = 988, We calculate like this predesors

Question 4: Which at the following pattern will not represent zero?

(a) 5+0

(b) 50-50/10

(c) 0/10

(d) 0×10

Answer (a) 5+0 because 0/n is zero 0 × n is zero

Question 5: How many whole numbers are there between 16 and 20?

(a) 4

(b) 3

(c) 5

(d) 6

(b) 3

Question 6: Which is highest whole number from the below option?

(a) 25 (b) 36 (c) 49 (d) 1000

Answer (d) 1000 because all are less then.

1000

Question 7: Find 151+31+9+19

(a) 260

(b) 210

(c) 290

(d) 300

Answer (b) 210 = (151 + 9) + (31+19)

= 160 + 50

= 210

Question 8: Find 15×4×17 using distributively

(a) 1020

(b) 1090

(c) 1190

(d) 1140

Answer is (a) 1020

= (15×4) ×17

= 60×17

= 1020

Question 9: Which no is exact between 99, 101?

(a) 100

(b) 101

(c) 98

(d) 96

Ans: (a) 100 by the whole number 99, 100, 101 one is exact between them I.e. 100.

Question 10: Find the value of the following 393 × 7 + 393 × 3

(a) 3930

(b) 5163

(c) 8163

(d) 9173

Ans: (a) 3930

= 393 (7+3)

= 393 × 10

= 3930

Question 11: Solve the following using distributive property 591 × 1001

(a) 1591

(b) 59191

(c) 591591

(d) 5991

Ans: (c) 591591 => 591 × (1000 + 1)

= 591000 + 591

= 591591

Question 12: If the each copy of book is at rupees 2 and the book have 20?

(a) 40

(b) 50

(c) 80

(d) 90

Ans: (a) 40 = 20×2

= 40

Question 13 Which of the following is a correct statement?

A) N = W

B) N⊂W

C) W⊂N

D) N≅W

Solution :

Natural numbers are contained in whole numbers

Question 14 Which is the whole number that does not have a predecessor?

A) 100

B) 0

C) 1

D) 9

Solution :

0 does not have a predecessor.

Question 15 Which of the following is the greatest number that can be formed by the digits 7, 0, 9, 8, 6 and 3?

A) 9, 87, 360

B) 9, 87, 063

C) 9, 87, 630

D) 9, 87, 603

Solution :

To form the greatest number (without repetition of digits) from the given digits, write them in descending order and place commas after periods

Question 16 Choose the successor of 301,999 from the following.

A) 30,200

B) 302,000

C) 302,010

D) 301,100

Question 17 What is the quotient of 64 ÷ 1?

A) 1

B) 0

C) 46

D) 64