Question

How many natural numbers upto 150 are divisible by 7?

Answer 1

Answer:

there are 28 numbers which is divided 7.

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Answer 2

Answer:

$\red {Number \: of \: natural \: numbers \: upto }$

$\red { 150 \: are \: divisible \: by \: 7 \: are }$

$\green {\: 21 }$

Step-by-step explanation:

$Let \: natural \: numbers \: upto \: 150 \:are \\divisible \: by \: 7 \: are : \\\pink { 7,14,21,\cdot\cdot\cdot 147} \:are \: in \: A.P$[

$first \term (a) = 7,\\common \: difference (d) = 7 [tex]</p><p>[tex] Last \: term\: Or \:n^{th} \:term = 147$

$\implies a+ (n-1)d = 147 \\\implies 4 + (n-1)7 = 147$

$\implies 7 + (n-1) 7 = 147$

/* Divide each term by 7 we get

$\implies 1 + n -1 = 21$

$\implies n = 21$

Therefore.,

$\red {Number \: of \: natural \: numbers \: upto }$

$\red { 150 \: are \: divisible \: by \: 7 \: are }$

$\green {\: 21 }$

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