Question : Directions: If 6 * 9 – 4 = 58 and 3 * 9 – 7 = 34, then in the expression, A * 4 – 9 = 91, what is the value of A?
Option 1: 6.5
Option 2: 17.5
Option 3: 20.5
Option 4: 30.5
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Correct Answer: 20.5
Solution : Given: 6 * 9 – 4 = 58 and 3 * 9 – 7 = 34
Like, 6 * 9 – 4 = 58→(6 × 9) + 4 = 54 + 4 = 58 3 * 9 – 7 = 34→(9 × 3) + 7 = 27 + 7 = 34 Similarly, A * 4 – 9 = 91 ⇒ (A × 4) + 9 = 91 ⇒ A × 4 = 91 – 9 ⇒ A × 4 = 82 ⇒ A = 82 ÷ 4 ⇒ A = 20.5
Hence, the third option is correct.
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Question : Directions: If 1 * 2 = 1, 2 * 3 = –1 and 3 * 4 = –5, then find the value of 7 * 9 = ?
Option 1: –47
Option 2: –29
Option 3: –2
Option 4: –9
Question : Direction: If BEAT = 25 – 22 – 26 – 7 and RUST = 9 – 6 – 8 – 7, then how will you code BURST?
Option 1: 25 – 22 – 9 – 8 – 7
Option 2: 25 – 9 – 6 – 8 – 7
Option 3: 25 – 9 – 8 – 7 – 6
Option 4: 25 – 6 – 9 – 8 – 7
Question : Find the value of the given expression. 3 – (– 6) {– 2 – 9 – 3} ÷ 7{1 + (– 2) (– 1)}
Option 1: –1
Option 2: 15
Option 3: 7
Option 4: 1
Question : Directions: By interchanging the given two signs and numbers which of the following equations will be correct? – and +, 6 and 3
Option 1: 7 – 3 × 2 ÷ 6 + 4 = 17
Option 2: 8 × 3 – 6 + 4 ÷ 2 = 49
Option 3: 7 + 6 ÷ 3 × 8 – 5 = 35
Option 4: 9 – 6 ÷ 4 + 3 × 7 = 8
Question : Directions: By Interchanging the given two numbers which of the following equations will be not correct? 9 and 6
Option 1: 7 + 6 × 4 ÷ 9 – 8 = 5
Option 2: 6 × 8 – 9 ÷ 3 + 5 = 75
Option 3: 9 × 7 + 4 ÷ 1 – 6 = 38
Option 4: 7 × 6 ÷ 3 + 9 – 8 = 19
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