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Byju's Answer

Standard XII

Mathematics

Monotonically Increasing Functions

If 7 *8 = 49,...

Question

If 7 8 = 49, 4 4 = 12, 6 4 = 18, then , 9 6 = ?

45

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50

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54

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None of these

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Solution

The correct option is A $45$
Logic:
7 8 = 56 - 7 = 49
4 4 = 16 - 4 = 12
6 4 = 24 - 6 = 18
9 6 = 54 - 9 = 45

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Similar questions

Q. Simplify the following:

(i) \sqrt{45} - 3 \sqrt{20} + 4 \sqrt{5} (i i) \frac{\sqrt{24}}{8} + \frac{\sqrt{54}}{9} (i i i) 4 \sqrt{12} \times 7 \sqrt{6}

Q. If

3

4

8 = 6

and

9

4

3 = 12

, then

12

6

24 = ?

Find the quotient of:

(1) 26 ÷ 2

(2) 54 ÷ 3

(3) 68 ÷ (−4)

(4) 108 ÷ (−9)

(5) (−56) ÷ 7

(6) (−168) ÷ 4

(7) (−96) ÷ (−8)

(8) (−209) ÷ (−11)

(9)

(10)

Q. Calculate 1 − 2 + 3 − 4 + 5 − 6 + 7 − 8 + ... + 49 − 50.

Verify the following :

(i) $\frac{3}{7} \times (\frac{5}{6} + \frac{12}{13}) = (\frac{3}{7} \times \frac{5}{6}) + (\frac{3}{7} \times \frac{12}{13})$
(ii) $\frac{- 15}{4} \times (\frac{3}{7} + \frac{- 12}{5}) = (\frac{- 15}{4} \times \frac{3}{7}) + (\frac{- 15}{4} \times \frac{- 12}{5})$
(iii) $(\frac{- 8}{3} + \frac{- 13}{12}) \times \frac{5}{6} = (\frac{- 8}{3} \times \frac{5}{6}) + (\frac{- 13}{12} \times \frac{5}{6})$
(iv) $\frac{- 16}{7} \times (\frac{- 8}{9} + \frac{- 7}{6}) = (\frac{- 16}{7} \times \frac{- 8}{9}) + (\frac{- 16}{7} \times \frac{- 7}{6})$

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If 7 *8 = 49, 4 *4 = 12, 6 *4 = 18, then , 9 *6 = ?

The correct option is A 45Logic:7 *8 = 56 - 7 = 494 *4 = 16 - 4 = 126 *4 = 24 - 6 = 189 *6 = 54 - 9 = 45

If 7 8 = 49, 4 4 = 12, 6 4 = 18, then , 9 6 = ?

The correct option is A $45$
Logic:
7 8 = 56 - 7 = 49
4 4 = 16 - 4 = 12
6 4 = 24 - 6 = 18
9 6 = 54 - 9 = 45