Mathematics ECAT Pre Engineering Chapter 1 Number System Online Test With Answers

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Mathematics ECAT Pre Engineering Chapter 1 Number System Online Test

Sr. # Questions Answers Choice
1 Name the property used in 4.1 + (-4.1) = 0 Additive inverse Multiplication inverse Additive identity Multiplication identity
2 Name the property used in 100 + 0 = 100 Additive inverse Multiplicative inverse Additive identity Multiplicative identity
3 Name the property used in 4 x (5 x 8) = ( 4 x 5) x 8 Associative property of addition Associative property of multiplication Additive identity Multiplicative identity
4 Associative property of addition Associative property of multiplication Commutative property of addition Commutative property of multiplication
5 Associative property of addition Commutative property of addition Distributive property Additive identity
6 Name the property used in 4 + 9 = 9 + 4 Associative property of addition Commutative property of addition Distributive property Additive identity
7 Which of the following sets has closure property w.r.t. addition { 0 } { 1 } { 0, -1} { 1, -1}
8 Additive property in R Multiplication property in R Cancellation property in R Distribution property in R
9 The set { 1 , -1} is closed w.r.t. Addition Multiplications Subtraction None of these
10 Principle of equality of fractions Rule for product of fractions Golden rule for fractions Rule for quotient of fractions
11 Principle of equality of fractions Rule for product of fractions Golden rule for fractions Rule for quotient of fractions
12 Principle of equality of fractions Rule for product of fractions Golden rule of fractions Rule for quotient of fractions
13 Principle of equality of fractions Rule for product of fraction Rule for quotient of fraction Golden rule of fractions
14 Principle of equality of fractions Rule for product of fraction Rule for quotient of fraction
15 (a + b)c = ac + bc a + b = b + a (a + b) + c = a + (b + c) a(b +c) = ab + ac
16 (a + b)c = a . c + bc a + b = b + a (a + b) + c = a + (b + c) a(b+ c) = ab + ac
17 In R the right cancellation property w.r.t. addition is
18 In R the left cancellation property w.r.t addition is
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22 a = a a &lt; a a &gt; a a<sup>2</sup>= a
23 The additive inverse of 0 is 1 -1 0 Does not exist
24 The additive inverse of 1 is 1 -1 0 Does not exist
25 The multiplicative inverse of 0 is 1 -1 0 Does not exist
26 The multiplicative inverse of 1 is 1 -1 0 Does not exist
27 The multiplicative inverse of 4 is -4 -1/4 1/4 1
28 The multiplicative inverse of 2/3 is 3/2 -2/3 -3/2 1
29 The additive inverse of 2/3 is 3/2 -2/3 -3/2 0
30 In R the number of identity elements w.r.t.'.' is One Two Three Four
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