Factorial sign means !,so anything like n! = n x (n-1).....

Thus or so therefore

3! = 3 x (3-1)! = 6

So Y - 3 = 6

Hence, the smug ones are saying 9 is the answer, which is correct!

12
But is not fair more than 70% on d platform don't know what factorial is all about.....including Lalac.......

12

Factorize 81a-16b

12

12. Ans

3 factorial

Good boy. The Answer is 12.
Explanation

Any number follow by ( ! ) You have to apply the factorial system which is n=(n-1(n-2)(n-3)
Which 3 is substitute to all the "n" value.
This same applicable if other number is used such as 4, 5, 9, you just expand the formula to 4, 5, etc, and multiple.

Thanks for the question. This is what we need in Nigeria. Instead talking insensible things.

psucc:
Na 9 be the answer

Y-6 =3
Y = 3+6
Y = 9

olodo

12

Obinoscopy:
Just state your answer. Don't show the working please.

Mathematically, Y = 12
Grammatically, Y = 9

12

Those who got 12 and went ahead to show the working have failed technically due to failure to comply with instruction. Learn to follow instruction!

Sonnobax15:

Those of una wey dey type many many things,e dey very clear say una no go school at all.....

9

Let me lecture you a little. In mathematics, an exclamation mark after a number signifies factorial.

When you see 2! It means 2x1
3! Means 3x2x1
4! Means 4x3x2x1
18! Means 18x17x16x15x14x........ Down to x1

I hope you have learned something today.

IamGreen1:



Not only him and the people that 'like' his comment

I swear

okikijamal:
12

Modified

Y-6=3!
Y-6=3×2×1
3! (3 factorial = 3x2x1)
Y-6=6
Take like terms
Y=6+6
Y=12 (Answer)

Shikena!

Do you know you failed this question, simply because you did not yield to simple instruction " Do not show any working".
If everyone gets the answer, something will be used for screening ......!

12

Timothyoj:


Do you know you failed this question, simply because you did not yield to simple instruction " Do not show any working".
If everyone gets the answer, something will be used for screening ......!

Ans= C (12)

9

jericco1:
I wonder how you people got 12.

Una go just dey one place dey create countless problems for person

Y-6=3!
! is called factorial in Further Mathematics.
6! means 6*5*4*3*2*1=720.
5! means 5*4*3*2*1=120.
4! means 4*3*2*1=24.
So also 3! is 3*2*1=6.
2! means 2*1=2.
1! means 1*1=1.
Coming back to the problem above:
Y-6=3*2*1
Y-6=6
Making Y subject of formula gives
Y=6+6 ( the minus 6 crosses the equality sign it changes to plus 6)
Adding gives Y = 12.
Hope this helps , but if you did Further Maths in Secondary school it will be clearer.

Obinoscopy:
Just state your answer. Don't show the working please.

What is the essence of this?

Obinoscopy:
Just state your answer. Don't show the working please.

it's C

That exclamation mark means 3x2x1=6
I have forgotten what they call it

Haven't done mathematics is 12 years. Sue me.

Sirjamesjnr dear, food is ready

Y - 6 = 3!
Y - 6 = 3 x 2 x 1
Y - 6 = 6
Y = 6+6
Y = 12

The answer is 12....

What is the question? There is no instruction indicating what should be done.

Y-6=3!
Y=3 *2+6=12

Obinoscopy:
Just state your answer. Don't show the working please.

C

cigaricon:
Simple, 9

Something as simple as this and people are doing long calculations like it's Jamb question, even after Op said just state the answer. Una wan show say una go school pass, yet with all the calculations you still failed. Chai! It is well

You're the one who failed it

derbykol:
Yes,under permutation and combination.

oh...no wonder am hearing it for the first time. I used to know maths back then whereas I was art students not science. Thanks for letting me know

psucc:
Na 9 be the answer

Y-6 =3
Y = 3+6
Y = 9

Y - 6 = 3 and Y - 6 = 3!
The equations above are different
3! = 3 x 2 x 1 = 6

Therefore
Y - 6 = 3!
Y - 6 = 3 x 2 x 1
Y - 6 = 6
Y = 6 + 6
Y = 12

12

nairaman66:


Can you please share your answer. Cheers

Already did. Go through the posts.

Y-6=3!
Making Y the subject of formula
Y=3!+6 note when minus;(-)) crosse's the sign of equality it will change to plus!(+)
So 3×2×1+6
=6+6= 12 the answer is 12

DrFunmisticGlow:
it's C

That exclamation mark means 3x2x1=6
I have forgotten what they call it

Haven't done mathematics in 12 years. Sue me.

Sirjamesjnr dear, food is ready

. You rock it. The answer is 12.