The speed of a boat in still water is 10 km/hr. If it can travel 26 km downstream and 14 km upstream in the same time, the speed of the stream is :

Created: 7 months ago | Updated: 2 months ago

2 km/hr

2.5 km/hr

3 km/hr

4 km/hr

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655

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How many real roots does the polynomial $2 x^{3} + 8 x - 7 h a v e ?$

Created: 8 months ago | Updated: 2 months ago

None

One

Two

Three

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387

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If xy =2 and $x y^{2} = 8, w h a t i s t h e v a l u e o f x ?$

Created: 8 months ago | Updated: 2 months ago

৪

1/2

৮

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483

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If a-1/a=2, what is $a^{3} - 1 / a^{3} ?$

Created: 8 months ago | Updated: 2 months ago

১৬

১০

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301

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The three sides of a triangle are x+1 , 2x-1, and 2x +1 respectively and the perimeter is 26 cm. The length of the smallest side is -

Created: 8 months ago | Updated: 2 months ago

5 cm

6 cm

4 cm

7 cm

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554

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There are 10 true -false questions in an examination. These question can be answered in -

Created: 8 months ago | Updated: 2 months ago

20 ways

100 ways

2^{10}

ways

1024 ways

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313

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Related Questions

How many real roots does the polynomial 2x3+8x-7 have?

If xy =2 and xy2=8, what is the value of x?

If a-1/a=2, what is a3-1/a3?

The three sides of a triangle are x+1 , 2x-1, and 2x +1 respectively and the perimeter is 26 cm. The length of the smallest side is -

There are 10 true -false questions in an examination. These question can be answered in -

How many real roots does the polynomial $2 x^{3} + 8 x - 7 h a v e ?$

If xy =2 and $x y^{2} = 8, w h a t i s t h e v a l u e o f x ?$

If a-1/a=2, what is $a^{3} - 1 / a^{3} ?$