7 - 8 - 9 - 1098 5 - 6 - 7 - 876 4 - 6 - 8 - -

The correct option is C 975 # 7× 8 × 9 = 1098 ⇒ (7+8+9)+3 ⇒ 24+3 ⇒ 27 (Sum of digits of RHS) #160; #160; (10+9+8) #160; ...

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Byju's Answer

Standard VI

Mathematics

Divisibility Rule for 3

7 × 8 × 9 = 1...

Question

$7 \times 8 \times 9 = 1098$
$5 \times 6 \times 7 = 876$
$4 \times 6 \times 8 = ?$

875

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567

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975

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643

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Solution

The correct option is C $975$
$# 7 \times 8 \times 9 = 1098$
$\Rightarrow (7 + 8 + 9) + 3$
$\Rightarrow 24 + 3$
$\Rightarrow 27$ (Sum of digits of RHS) $(10 + 9 + 8)$

$# 5 \times 6 \times 7 = 876$
$\Rightarrow (5 + 6 + 7) + 3$
$\Rightarrow 18 + 3$
$\Rightarrow 21$ (Sum of digits of RHS) $(8 + 7 + 6)$

$# 4 \times 6 \times 8 = ?$
$\Rightarrow (4 + 6 + 8) + 3$
$\Rightarrow 18 + 3$
$\Rightarrow 21$

option A : $8 + 7 + 5 = 20$
option B : $5 + 6 + 7 = 18$
option C : $9 + 7 + 5 = 21$
option D : $6 + 4 + 3 = 13$

$∴ option C is correct (975)$

Suggest Corrections

Similar questions

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) $\frac{- 16}{7} \times (\frac{- 8}{9} + \frac{- 7}{6}) = (\frac{- 16}{7} \times \frac{- 8}{9}) + (\frac{- 16}{7} \times \frac{- 7}{6})$

A shopkeeper sold shoes of the following sizes in a day. Prepare a table using tally marks. $7, 5, 4, 4, 6, 8, 4, 4, 7, 8, 5, 7, 5, 8, 6, 4, 8, 4, 6, 7, 7, 5, 5, 4, 5, 4, 7, 7, 6, 6, 5, 4, 4, 6, 5, 6, 7, 8, 7, 4$

Q. Find the value of:

(1) 3⁶
(2) 6³
(3) 2⁶
(4) 1⁸
(5) 5⁴
(6) 4³
(7) 10⁵
(8) 10⁷
(9) 7⁴
(10) 8²

Q. In a shop, different sizes of shoes sold in a week are 7, 9, 8, 6, 7, 10, 6, 7, 8, 9, 11, 5, 6, 7, 8, 5, 9, 10, 9, 11, 12, 8, 3, 3, 5, 4, 6, 7, 4, 6, 7, 8, 8, 6, 9. What is the difference of the number between shoes sold of size 6 and size 7?

Q. Tell how many times!

9 + 9 + 9 + 9 + 9 + 9	= 6 × 9	= 54
4 + 4 + 4 + 4 + 4	= 5 × 4	= 20
8 + 8 + 8	=____ × 8	= ____
3 + 3 + 3 + 3 + 3	= 5 × ____	= ____
30 + 30 + 30	= ____ × ____	= ____
7 + 7 + 7 + 7 + 7 + 7	= ____ × ____	= ____
12 + 12 + 12 + 12	= ____ × 12	= ____
6 + 6 + 6	= ____ × ____	= ____
10 + 10 + 10 + 10	= ____ × ____	= ____
2 + 2 + 2 + 2 + 2	= ____ × ____	= ____
6 + 6 + 6 + 6 + 6 + 6 + 6	= ____ × ____	= ____

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7×8×9=10985×6×7=8764×6×8=?

$7 \times 8 \times 9 = 1098$
$5 \times 6 \times 7 = 876$
$4 \times 6 \times 8 = ?$