Question

Reasoning question

Answer 1

\(\large \color{black}{\begin{align}
& \normalsize \text{Fill in the blanks }\hspace{.33em}\\~\\
& 80:90::120:?\hspace{.33em}\\~\\
& a.)\ 143 \hspace{.33em}\\~\\
& b.)\ 156 \hspace{.33em}\\~\\
& c.)\ 169 \hspace{.33em}\\~\\
& d.)\ 136 \hspace{.33em}\\~\\
\end{align}}\)

Answer 2

Bhai are you sure you're in 11th grade?

Answer 3

??

Answer 4

Mathmath u kiddin rn

Answer 5

\[\frac{80}{90} = \frac{120}{?}\]

Answer 6

is this 10th grade question

Answer 7

I normally encountered these in 6th/7th grade.

Answer 8

i should mention that this reasoning type question doesn't necessarily involves math

Answer 9

Yeah, I mean sure, you don't have to make an equation and solve it.

This is as verbal as I can get about the question...

80:90 is the same as 8:9. Now 15*8 = 120 so the question mark should be replaced by 15*9.

Answer 10

i've never see the symbol :: before?

Answer 11

but now u have seen

Answer 12

Uh, I read it as "equivalent to" or "corresponds to" or "same as" or whatever.

Answer 13

yes lol - but what does it mean?

Answer 14

Are you sure the options are correct, mathmath?

Answer 15

it is used in reasoning /IQ type questions , where u have to find the pattern it may be more complex

Answer 16

and \(80/90=120/x\), \(x= 135\) is not in options

Answer 17

by doing some operation on 80, it is converted to 90

by applying the same operation on 120 u have to find the resulting number

Answer 18

\(\large \color{black}{\begin{align}
& \normalsize \text{Fill in the blanks }\hspace{.33em}\\~\\
& 80:90::120:?\hspace{.33em}\\~\\
& a.)\ 143 \hspace{.33em}\\~\\
& b.)\ 156 \hspace{.33em}\\~\\
& c.)\ 169 \hspace{.33em}\\~\\
& d.)\ 181 \hspace{.33em}\\~\\
\end{align}}\)

last option correct

Answer 19

*corrected

Answer 20

interesting, so this is not a simple proportion

Answer 21

wait got one more correction

Answer 22

\(\large \color{black}{\begin{align}
& \normalsize \text{Fill in the blanks }\hspace{.33em}\\~\\
& 80:99::120:?\hspace{.33em}\\~\\
& a.)\ 143 \hspace{.33em}\\~\\
& b.)\ 156 \hspace{.33em}\\~\\
& c.)\ 169 \hspace{.33em}\\~\\
& d.)\ 181 \hspace{.33em}\\~\\
\end{align}}\)

Answer 23

this is full correct

Answer 24

8 * 10
9 * 11
12 * 10
13 * 11 = 143

143 = 11 * 13
156 = 12 * 13
169 = 13 * 13
181 = prime

Answer 25

143

Answer 26

181 is the answer, wow

Answer 27

How?

Answer 28

I thought the answer was 143.

Answer 29

because all the others are composite

Answer 30

we're not doing "odd man out" here ;p

Answer 31

i mean by pattern he got

143 = 11 * 13
156 = 12 * 13
169 = 13 * 13

except 181

Answer 32

Since 80, 90, and 120 are not prime, why would we think the last number should be prime?

Answer 33

oh i see

Answer 34

Then I was able to fit 143 as a continuation of the pattern, but not 181.

Answer 35

\(\large 80:99 :: 120:143\)

\(\large 8 \times 10:9 \times 11 :: 12 \times 10: 13 \times 11\)

\(\large 80:99 :: 120: 143\)

Answer 36

I think we can propose legit reasons for each other options to be the answers although 143 is more apparent one...

Answer 37

For example finding a \(k\) and \(l \) such that \[80k+l=90\\120k+l=any \ option\ \]