thinkdip:

Its math so you need to first identify the difference, in this case its a difference of 8

bro, i'm an electrical engineer, if you said difference, how is ur difference equals 8, when the first equation is 2and3=7, using logic and reasoning, ur difference of 8 isn't visible. please give me better explanation

Proudlyngwa:
98 correct

yes yes yes in Daniel Bryans voice

For each example, it seems to me to be the square of the first number minus 2. That is...

N² - 2

In which case the answer would be 98 as in 10² - 2.

thinkdip:

Its simply 119
how did I get my answers
Subtract the first total from the second total
and just add 8. What ever you get add it to the
second total it would give u the next total, do it
for all and you'll get the answer.
e.g
i) (23-7)+8=24
Then 24+23= 47.
ii) (47-23)+8=32
Then 32+47=79
iii) (79-47)+8= 40
Then 40+79= 119
and so on and so forth

Wrong bro, youare using sequence and sequence is misleading at the last equation.

borednhorny:
honestly i need some of whatever makes you think like this

am I wrong??

visiondee:
The answer is 99 with proof

3×2=6+1=7
5×4=20+3=23
7×6=42+5=47
9×8=72+7=79
10×9=90+9=99
Hence the proof. Show me likes if I'm right

You are wrong. It's 98.your answer would have been correct if it were 11*10.check the sequence the first digits are odd numbers while the second are even but the one in question changes. The fina answer is 98

visiondee:
The answer is 99 with proof

3×2=6+1=7
5×4=20+3=23
7×6=42+5=47
9×8=72+7=79_[/sub][sub][sub][/sub][img][/img]
10×9=90+9=99
Hence the proof. Show me likes if I'm right

You are wrong. It's 98.your answer would have been correct if it were 11*10.check the sequence the first digits are odd numbers while the second are even but the one in question changes. The fina answer is 98

The answer is 98. The formular is: multiply across, the number in the first column with that in the second column. subtract one from the second column number and add the result to the previous answer from the initial multiplication. Thus the final answer on the forth column.

oya op it's ur own turn..pls come n show us the workings to getting 98 cuz I hv seen a thousand ways peeps got there 98..lets learn..over to u.

It's 98 goddamist.

castel428:

you guyz are just intelligent but that doesnt make you a good teacher. You will get your students more confused with your explanation. Now the add addition of odd numbers 1,3,5,7,9 will give us 99 as the answer, that is a sequence. But consider 98 as the answer too, even though those that arrived at the answer couldnt give us a concise approach how they got it. But in simplest term:
1 is deducted by each of the multiplier and the rest is added to the product of each equation:
that is why the final answer 10*9 =90+(9-1)=98. I de use small phone so I cant type more than this

Why don't you go back and read what led to the argument or my first post on this thread that explained the answer.
ITK.

99

LordofWar:
98

3 x 2 = 6 ... + 1 = 7
5 x 4 = 20 ... + 3 = 23
7 x 6 = 42 ... + 5 = 47
9 x 8 = 72 ... + 7 = 79

10 x 9 = 90 ... + 8 = 98

a x b + [b-1] = Answer (small play, and some peeps wan kill me its not my equation na

note the sequence of the figures being added ...

modified

look at it this way:

3 x 2 = 6 ... + 1 = 7 (1 that was added is the number before 2 [the least number in the equation])
5 x 4 = 20 ... + 3 = 23 (3 that was added is the number before 4 [the least number in the equation])
7 x 6 = 42 ... + 5 = 47 (5 that was added is the number before 6 [the least number in the equation])
9 x 8 = 72 ... + 7 = 79 (7 that was added is the number before 8 [the least number in the equation])

10 x 9 = 90 ... + 8 = 98 (8 that was added is the number before 9 [the least number in the equation])

maybe there is a shorter way to explain this.. but the above is how i arrived at 98

VERY VERY WRONG steps BUT CORRECT answer.
it's 3 × 3 = 9 ( 9 - 2 ) = 7
5 × 5 = 25 - 2 = 23

and so on.

10 × 10 = 100 - 2 = 98.

lifestyle1:
I hate mass that i cant even spell it.

[/quote]

meskana212:
119 jhoor.....23-7=16, 47-23=24, 79-47=32...16, 24, 32....so the next common difference is 40 since they increase by 8. ...119-79=40

Dumb ass

meskana212:
am I wrong??

i'm not interested in the answer. I'm just suprised at how you went about ur own solution. Completely outside the box

Proudlyngwa:
How soon can you answer this

I don't know if this has been posted on nairaland before, saw it and decided to share.

98

89

Proudlyngwa:

Wrong bro, youare using sequence and sequence is misleading at the last equation.

I am not wrong, the question is a logical question so it has no mathematical prove. All you have to do is understand the logic and unbox it, note that I only dealth with the answers for each line because the subject only carries 2,2,2,1 as it sequence therefore it has no effect to the solution, meaning that the question can only be answered by logic. check my solution and prove me wrong

Olalekan95:
Dumb ass

he's correct.. all this olodo wey full nairaland self

ncoolsome:
oya op it's ur own turn..pls come n show us the workings to getting 98 cuz I hv seen a thousand ways peeps got there 98..lets learn..over to u.

3rd post 1st page

D answer is 90+11 = 101

Rapsowdee01:
98

sharp!

3x2=7 (1)
5x4=23 (3)
7x6=47 (5)
9x8=79 (7)
9x10=101 (11)

The progression is in prime numbers which are only divisible by themselves

What you fail to notice is that the next 2 numbers in the sequence are supposed to be 11 and 10 but we have 10 and 9 so any calculation from the given sequence won't work it's just trickish

The answer is 101.
It was derived by adding prime numbers 1,3,5,7,11 respectively to each product.

80!

it is 98 not hard at all jst primary reasoning will solve it.

The answer is either 99 or 101.. Because the added number to the multiplication follows as arithmetic progression by odd numbers or prime numbers..

Answer is 99 with proof

3×2=6+1=7
5×4=20+3=23
7×6=42+5=47
9×8=72+7=79
10×9=90+9=99

The formula is (a x b) + (b - 1)
(3 x 2) + (2 - 1) = 6 + 1 = 7
(5 x 4) + (4 - 1) = 20 + 3 = 23
(7 x 6) + (6 - 1) = 42 + 5 = 47
(9 x 8 ) + (8 - 1) = 72 + 7 = 79
(10 x 9) + (9 - 1) = 90 + 8 = 98

99 or 98 3*2+1(first odd numba)=7 5*4+3(second odd numba) =23 7*6+5(third odd numba) =47 9*8+7(third odd numba)=79 10*9+9(fourth odd numba)=99 or by 10*9+8(numba b4?) =98