If @ is '+' and % is '-', then which of the following options is the second smallest?

Correct option is A

 Let's substitute the given symbols with their respective operations:

• @ means '+' (addition)

• % means '-' (subtraction)

Now, let's evaluate each expression:

(a) 1 @ 78 % 92 @ 43 % 54

1+78−92+43−54

79−92+43−54= −14+43−54=−25

(b) 37 @ 24 % 35 @ 41 % 95

37+24−35+41−95

 61−35+41−95=26+41−95=−28

(c) 27 @ 41 % 63 @ 38 % 59

27+41−63+38−59

 68−63+38−59=5+38−59=−16

(d) 15 @ 82 % 93 @ 61 % 84

15+82−93+61−84

 97−93+61−84=4+61−84=−19

Step 2: Arrange in Ascending Order

We have the computed values:

• (b) = -28

• (a) = -25

• (d) = -19

• (c) = -16

The second smallest value is (a) -25.