If 0, 1, 2, 3,..., 9 is written as a, b, c, d,...,j, then find dc \times f − (bf − d) \times d.

SSC CHSL 20 Dec 2015 Shift 1 Paper

Question : 30 of 200

Marks: +1, -0

If 0, 1, 2, 3,..., 9 is written as a, b, c, d,...,j, then find

dc × f − (bf − d) × d.

Solution:

Given :

a=0,b=1,c=2,d=3

,....,i=8 \and j=9

To find :

dc × f − (bf − d) × d

Solution :

[32 × 5] − (15 − 3) × 3

160 − (12 × 3) = 124

≡ bce

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