Question

778 X 994 = (778 X 1000 ) - ( 778 x ______ ) - 778

a.5

b.6

c.778

d.1994

Also explain then I will mark him as brainlest ans but the ans should be good.

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Answer 1

Answer:

5

Step-by-step explanation:

Let 'a' will be filled in the blank place.

⇒ 778 × 994 = ( 778 × 1000 ) - ( 778 × a  ) - 778

By taking 778 as common in R.H.S,

⇒ 778 × 994 = 778 ( 1000 - a - 1 )

⇒ 994 = 778 ( 999 - a ) ÷ 778

⇒ 994 = 999 - a

⇒ 994 - 999 = -a

⇒ -5 = -a

∴ a = 5.

Verification :

⇒ 778 × 994 = ( 778 × 1000 ) -  ( 778 × 5 ) - 778

⇒ 778 × 994 = 778 ( 1000 - 5 - 1 )

⇒ 778 × 994 = 778 ( 1000 - 6 )

⇒ 778 × 994 = 778 × 994.

Verified.

So, 5 will be filled in the blank space.

Answer 2

Answer:

1994

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