In the following some of the combinations of operations and an operandA: means ??3?B: means ?x3?C: means ?-3?D: means ?+3? E: means ??2?F: means ?x2?G: means ?-2?H: means ?+2?

In the following some of the combinations of operations and an operand
A: means ??3?
B: means ?x3?
C: means ?-3?
D: means ?+3?
E: means ??2?
F: means ?x2?
G: means ?-2?
H: means ?+2?

42x21-12 ?=880
1). A
2). F
3). G
4). D

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Guest · Answer 1 · 2019-04-10 01:07:13

Solution

Expression : 42x21-12 ?=880

L.H.S. = 42x21-12 ? = 882 - 12 ?

(A) : A

= $882 - 12 \div 3 = 882-4=878$

(B) : F

= $882-12 \times 2 = 882-24=858$

(C) : G

= $882-12 - 2 = 882-14=868$

(D) : D

= $882-12 +3 = 882-9=873$

=> Ans - (E)

Guest · Answer 2 · 2019-05-08 17:47:17