Question

8142=2; 2217=3; 7215=4; 9731=1; then 3129=? puzzle ​

Answer 1

Answer:

3129 = 4

Step-by-step explanation:

If we assume, PQRS = X then, (P+S)/(Q+R) = X.

So, (8+2)/(1+4) = 2

(2+7)/(2+1) = 3

(7+5)/(2+1) = 4

(9+1)/(7+3) = 1

⇒ (3+9)/(1+2) = 4

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Answer 2

Answer:

Required number is 4.

Step-by-step explanation:

Given,

8142=2; 2217=3; 7215=4; 9731=1

This is a problem of General inteligence.

Here we want to find value of 3129.

If you look it carefully then you can see that every numbers are following a sequence.

Given,$8142 = 2$

We can write,

$\frac{8 + 2}{1 + 4} \\ = \frac{10}{5} \\ = 2$

Again,$2217 = 3$

We can write,

$\frac{2 + 7}{2 + 1} \\ = \frac{9}{3} \\ = 3$

Again,$7215 = 4$

We can write,

$\frac{7 + 5}{2 + 1} \\ = \frac{12}{3} \\ = 4$ and $9731 = 1$

We can write it

$\frac{9 + 1}{3 + 7} \\ = \frac{10}{10} \\ = 1$

So,we can say that if $pqrs = x$

then $\frac{p + s}{q + r} = x$

Here,

$p = 3 \\ q = 1 \\ r = 2 \\ s = 9$

So,

$x = \frac{3 + 9}{1 + 2} \\ x = \frac{12}{3} \\ x = 4$

This is a math problem.

Two more important conceptual maths problems:

1) https://brainly.in/question/13024124

2) https://brainly.in/question/1169549