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SSC CHSL 6-March-2018 Shift 1 Paper
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© examsnet.com
Question : 40
Total: 106
If 1Δ-5 = 5, 4Δ7 = -28 and -1Δ-3 = -3, then find the value of 8Δ-8 = ?
64
-48
45
74
Validate
Solution:
Given : 1Δ-5 = 5, 4Δ7 = -28 and -1Δ-3 = -3
If we replace 'Δ' with 'x' and also multiply the final result with '-1', then we will get the desired result.
Eg :-
−
1
(
1
×
−
5
)
=
5
and −1(4 × 7) = −28 and −1(−1 × −3) = −3
Similarly,
−
1
(
8
×
−
8
)
=
64
© examsnet.com
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