# IQ test sample patterns. Can anyone find the missing number? [closed]

I am fully hopeful that you can crack this puzzle.

You need to answer with an explanation.

## closed as off-topic by Gareth McCaughan♦Jul 5 at 10:16

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My guess:

$$30$$

because:

In the first row, add $$2$$ to the $$1$$ and multiply with the $$3$$ to get $$9$$. In the second row, double the $$4$$ and multiply with the $$3$$ to get $$24$$. In the third row, we do both - add $$2$$ to the $$5$$ and double the $$2$$, then multiply to get $$28$$. If you now observe the pattern of bold/normal font for the first two columns, it repeats on the fourth row, so we add $$2$$ to the $$4$$ and multiply with the $$5$$ to get $$30$$.

• bold numbers doesn't matter – Rajendra Singh Jul 5 at 9:49

Answer: Idea similar JonMarkPerry, but slightly different, my guess:

60

RULES:

1)BOLD NUMBER = BOLD NUMBER +2

2) right number is multiple of first two in a row multiply by number of simple divisors of each number(beginning one, not+2) different from it (EX for 3 is 1, 4 is 2 and 1, for 6 is 3 and 2 and 1 and so on)

3)right number is not bold only if first two are not bold

4) using those rules we get (1+2)*3*1*1=9(bold) 3*4*1*2=24(not bold) (2+2)*(5+2)*1*1=28(bold) so (4+2)*5*2*1=60(bold)

• The number is bold or not, doesn't make sense – Rajendra Singh Jul 5 at 9:46
• @RajendraSingh What exactly doesnt make sence? I totally agree that number is bold or not – Igor sharm Jul 5 at 10:01
• as @Matti said- I thought that the bold numbers don't matter. I agree – Rajendra Singh Jul 5 at 10:03

My solution is...
$$l = left$$
$$r = right$$

$$2l + r = 15$$
$$-l + r = 4 | +l$$
$$r = 4 + l$$

$$6l = 15 |:6$$
$$l = 2.5$$
$$r = 6.5$$

So the next number is:

$$2l + 28 = 33$$

(I thought that the bold numbers doesn't matter)

• I don't think the process to get the answer can be complex like this – Rajendra Singh Jul 5 at 9:48