## Mathematical operation and symbol notation

#### Mathematical operation and symbol notation

1. Statement
L = M ≥ N;
M > P;
L < K.
Conclusions
I. K > P
II. N < K

1. Statement
L = M ≥ N;
M > P;
L < K ;
On combing both the statements, we get
P < L = M ≥ N < k
Conclusions
I. K > P         (false)
II. N < K       (true)

##### Correct Option: B

Statement
L = M ≥ N;
M > P;
L < K ;
On combing both the statements, we get
P < L = M ≥ N < k
Conclusions
I. K > P         (false)
II. N < K       (true)
Hence, only Conclusions II is definitely true.

1. Select the correct combination of mathematical signs to replace * signs and to balance the given equation.
2 * 4 * 3 * 4 * 9

1. 2 x 4 - 3 + 4
8 - 3 + 4
= 9

##### Correct Option: C

2 x 4 - 3 + 4
8 - 3 + 4
= 9

1. If '+' means '-' '-' means 'x' , 'x' means '÷' and '÷' means '+' Which combination will give you the value of '0' in 42*4*12*20*9?

1. The given expression is 42*4*12*9 = 0
From option (c), 42, - 4 ÷ 12 x 20 + 9
By coding, the equation becomes,
LHS ⇒ 42 x 4 + 12 ÷ 20 - 9
By applying the operations in sequence, from left to right,
168 + 12 ÷ 20 - 9
180 ÷ 20 - 9
9 - 9 = 0 = R.H.S.

##### Correct Option: C

The given expression is 42*4*12*9 = 0
From option (c), 42, - 4 ÷ 12 x 20 + 9
By coding, the equation becomes,
LHS ⇒ 42 x 4 + 12 ÷ 20 - 9
By applying the operations in sequence, from left to right,
168 + 12 ÷ 20 - 9
180 ÷ 20 - 9
9 - 9 = 0 = R.H.S.

1. If - mean x , x means + , + means ÷ and ÷ means -. then
40 x 12 + 3 - 6 ÷ 60 = ?

1. 40 + 12 ÷ 3 x 6 - 60
= 40 + 4 x 6 - 60
= 40 + 24 - 60
= 64 - 60 = 4

##### Correct Option: D

40 + 12 ÷ 3 x 6 - 60
= 40 + 4 x 6 - 60
= 40 + 24 - 60
= 64 - 60 = 4

1. If + mean x, - means + , ÷ means + , x means - then the value of 162 x 52 - 26 ÷ 15 + 5

1. 162 - 52 ÷ 26 + 15 x 5
= 162 - 2 + 75 = 235

##### Correct Option: B

162 - 52 ÷ 26 + 15 x 5
= 162 - 2 + 75 = 235