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RD Sharma - Volume 1

3. Binary Operations

Exercise 3.1

1 A 1 B 1 C 1 D 1 E 1 F 1 G 2 A 2 B 2 C 2 D 2 E 2 F 3 4 5 6 7 8 9 10

Exercise 3.2

1 A 1 B 2 A 2 B 3 4 A 4 B 4 C 4 D 4 E 4 F 4 G 4 H 4 I 4 J 4 K 4 L 4 M 4 N 4 O 5 6 7 8 9 10 11 12 13 14

Exercise 3.3

Exercise 3.4

1 2 3 4 5 6 7 8 9

Exercise 3.5

1 2 3 4 5 6 7 8 9 A 9 B

Very short answer

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MCQ

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Q. 225.0( 1 Vote )

Mark the correct A. -10

B. 0

C. 10

D. non-existent

Class 12th RD Sharma - Volume 1 3. Binary Operations

Answer :

For Identity element a * e = a = e * a, with ‘e’ being the identity element.

Given a * b = a + b + 10

⇒ a * e =a+e+10=a

⇒ e=-10 (Not a Natural number)

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