Mathematical Operations Test - 4

After Interchanging the signs and number the equations will be [a] 4 − 6 × 3 = 14 which is wrong  [b] 3 − 1 × 6 = 3which is wrong [c] 6 × 3 − 8 = 10 which is correct   [d] 6 − 3 × 18 = 48 which is wrong [e] 3 − 5 × 6 = 27which is wrong

Given that: 20−10=200. But, actually 20 × 10 = 200. So,−means × Given that: 8 − 4 = 12, But, actually 8 + 4 = 12 So, ÷ means + Given that: 6 × 2 = 4.But, actually 6 − 2 = 4.So,× means − Thus, in the given mathematical language,−means ×, ÷ means + and ÷ means + So + means ÷. Putting the correct signs, we have: Given expression = 100 × 10 − 1000 + 1000 − 100 − 10 = 1000 − 1000 + 10 − 10 = 0.

10 x 2 + 5 - 5 20 + 5 - 5 = 20

The new equations according to the 4 options will be [a] 25 − 5 × 8 + 60 = 45   [b] 25 ÷ 5 − 8 + 60 = 57 [c] 25 ÷ 5 + 8 − 60 = −47    [d] 25 ÷ 5 × 8 + 60 = 100

A+D>C+E B+E>C+D or 2B Since, the relation between 1 and 2 is not clear it is however certain that A + D > B + C (combination with C is < A + D).

After interchanging the signs the equations are: [a] 7 + 5 × 3 = 22 which is wrong [b] 4 × 9 + 1 = 37 which is wrong [c] 6 + 5 × 8 = 46 which is correct [d] 2 × 11 + 4 = 26 which is wrong

12 × 4 ÷ 24 − 10 + 12 − 10 + 1 = −7

After substituting the symbols in the given expression the new expression will be: 2 + 8 ÷ 2 × 6 − 7

The solving steps will be: 2 + 4 × 6 − 7   2 + 24 − 7   26 − 7 = 19

5 + 20 ÷ 4 × 2 − 10

5 + 10 − 10 = 5