## Mathematical operation and symbol notation

#### Mathematical operation and symbol notation

1. If + means ÷, - means x, x mean +, ÷ means -, then
90 + 18 - 6 x 30 ÷ 4 = ?
1. 64
2. 65
3. 56
4. 48

1. 65

##### Correct Option: B

65

1. If + = x , - = ÷ , x = + , ÷ = - , then which is the correct equation out of the following ?
1. 18 ÷ 6 + 4 - 2 ÷ 3 = 22
2. 18 + 6 - 4 x 2 ÷ 3 = 26
3. 18 x 6 - 4 + 7 x 8 = 47
4. 18 - 6 x 7 ÷ 2 + 8 = 63

1. 18 + 6 - 4 x 2 ÷ 3 = 26
After chaning, the equation is
L.H.S., 18 x 6 ÷ 4 + 2 - 3
108 ÷ 4 + 2 - 3
27 + 2 - 3
29 - 3 = 26 R.H.S.

##### Correct Option: B

18 + 6 - 4 x 2 ÷ 3 = 26
After chaning, the equation is
L.H.S., 18 x 6 ÷ 4 + 2 - 3
108 ÷ 4 + 2 - 3
27 + 2 - 3
29 - 3 = 26 R.H.S.

1. Select the correct combination of mathematical signs to replace * signs and to balance the given equation.
5 * 6 * 5 * 8 * 14
1. + - x =
2. x ÷ + =
3. ÷ + = -
4. + x - ÷

1. 5 x 6 ÷ 5 + 8 = 14

##### Correct Option: B

5 x 6 ÷ 5 + 8 = 14

1. Insert the arithmetical operations in the following numerical figure-
4_3_4 = 48
1. + +
2. x +
3. + -
4. x x

1. 4 x 3 x 4 = 48

##### Correct Option: D

4 x 3 x 4 = 48

Direction: In these question, relationship between different element is shown in the statements. These statements are followed by two conclusions.

1. Statements:
A > B > C, D > E > F, D > C
Conclusions:
I.E > C II. F > B
1. If only conclusion I follows
2. If only conclusion II follows
3. If either conclusion I or II follows
4. If neither conclusion I nor II follows
5. If both conclusion I and II follow.

1. A > B < C < D > E > F
E and C can't be compared. Hence II does not follow.
Z and J can't be compared. Hence I does not follows. Consequently II does not follows either.

##### Correct Option: D

A > B < C < D > E > F
E and C can't be compared. Hence II does not follow.
Z and J can't be compared. Hence I does not follows. Consequently II does not follows either.