symbol substitution Practice Questions Answers Test with Solutions & More Shortcuts
Question : 1 [S.S.C. (CPO) 2008]
If '-‘ denotes addition, ‘+' denotes subtraction, ‘×' denotes division and ÷ denotes multiplication, then 7 -10 × 5 ÷ 6 + 4 =?
a) 3
b) 12
c) 15
d) 9
Answer »Answer: (c)
According to the question,
? = 7 - 10 × 5 ÷ 6 + 4
from the question by changing the symbols, we get
= 7 + 10 ÷ 5 × 6 - 4 (using VBODMAS rule)
=7 + 2 × 6 - 4
= (7 + 12) - 4
= 15
Question : 2 [S.S.C. (10+2) 2013]
If '+' means 'minus', ‘-‘, means 'multiply’, ‘÷’ means ‘plus’ and '×' means 'divide', then 10 × 5 ÷ 3 - 2 + 3 = ?
a) 5
b) $53/3$
c) 21
d) 36
Answer »Answer: (a)
According to the question,
? = 10 × 5 ÷ 3 -2 + 3
from the question by changing the symbols, we get
= 10 ÷ 5 + 3 × 2 - 3 (using VBODMAS rule)
= 2 + 3 × 2 - 3
= 2 + 6 - 3
= 8 - 3 = 5
Question : 3 [C.B.I. (PO) 2011]
A means ‘+', B means '-' C means ‘×' and D means ÷, then 18 C 14 A 6 B 16 D 4 =?
a) 254
b) 238
c) 188
d) 258
e) None of these
Answer »Answer: (a)
According to the question,
? = 18 C 14 A 6 B 16 D 4
from the question by changing the symbols, we get
= 18 × 14 + 6 - 16 ÷ 4 (using VBODMAS rule)
= 18 × 14 + 6 - 4
= 252 + 6 - 4
= 258 - 4 = 254
Question : 4 [C.B.I. (Clerk) 2010]
If A means '×' B means ‘÷' C means '-' and D means ‘+', then 4 D 16 A 5 B 8 C 5 = ?
a) 9
b) 16
c) 13
d) 75
e) None of these
Answer »Answer: (a)
According to the question,
? = 4 D 16 A 5 B 8 C 5
from the question by changing the symbols, we get
= 4 + 16 × 5 ÷ 8 - 5 (using VBODMAS rule)
= 4 + 16 × 0.625 - 5
= 4 + 10 - 5
= 14 - 5 = 9
Question : 5 [I.B.P.S. (PO) 2011]
If A means ‘-', B means '÷', C means ‘+' and D means '×', then 15 B 3 C 24 A 12 D 2 = ?
a) 3
b) 5
c) 7
d) 9
e) None of these
Answer »Answer: (b)
According to the question,
? = 15 B 3 C 24 A 12 D 2
from the question by changing the symbols, we get
= 15 ÷ 3 +24 - 12 × 2 (using VBODMAS rule)
= 5 + 24 -12 × 2
= 5+ 24 - 24 = 5
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