Which number should come next in the series : 1, 3, 6, 10, 15?

Created: 5 years ago | Updated: 2 years ago

Premier Bank Ltd Premier Bank Ltd - Management Trainee Officer - 17.07.2009 Analytical Question

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This is the Triangular Number Sequence:

1, 3, 6, 10, 15 ...

We can use x_n to mean "dots in triangle n", so we get the rule:

Rule: x_n = n(n + 1)/2

the 6th Triangular Number is

x₆ = 6(6 + 1)/2 = 21

so,ans is 21

5 years ago

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1. Which number comes next in the sequence? 1,2,0,3,-1,4................

Created: 5 years ago | Updated: 8 months ago

-2

-3

None

Bangladesh Krishi Bank Krishi Bank - Senior Officer - 25.03.2011 Analytical Question

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1 645

2. Mithu is ranked twenty- first in a class of sixty-five students. What will be his rank if the lowest candidate is assigned rank 1?

Created: 5 years ago | Updated: 2 years ago

44^{t h}

45^{t h}

46^{t h}

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Bangladesh Krishi Bank Krishi Bank - Senior Officer - 25.03.2011 Analytical Question

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0 504

3. Four of the following five are alike in a certain way and so form a group . Which one of the following does not belong to that group?

Created: 5 years ago | Updated: 8 months ago

Bangladesh Krishi Bank Krishi Bank - Senior Officer - 25.03.2011 Analytical Question

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0 474

4. Select an appropriate term that complete the seriesL, p, F, N q G, P r H, R s 1-

Created: 5 years ago | Updated: 2 years ago

m P m

T t J

t T j

TTJ

Bangladesh Krishi Bank Krishi Bank - Senior Officer - 25.03.2011 Analytical Question

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0 498

5. $T h e d a y t h a t w i l l c o m e 3 d a y s a f t e r \overset{t o m o r r o w}{\to} w i l l b e S a t u r d a y . W h a t w a s t h e d a y t w o d a y s b e f o r e \overset{y e s t e r d a y}{\to} ?$

Created: 5 years ago | Updated: 2 years ago

Saturday

Sunday

Monday

None

Bangladesh Krishi Bank Krishi Bank - Senior Officer - 25.03.2011 Analytical Question

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0 492

Which number should come next in the series : 1, 3, 6, 10, 15?

Analytical Question

Related Question

1. Which number comes next in the sequence? 1,2,0,3,-1,4................

2. Mithu is ranked twenty- first in a class of sixty-five students. What will be his rank if the lowest candidate is assigned rank 1?

3. Four of the following five are alike in a certain way and so form a group . Which one of the following does not belong to that group?

4. Select an appropriate term that complete the seriesL, p, F, N q G, P r H, R s 1-

5. $T h e d a y t h a t w i l l c o m e 3 d a y s a f t e r \overset{t o m o r r o w}{\to} w i l l b e S a t u r d a y . W h a t w a s t h e d a y t w o d a y s b e f o r e \overset{y e s t e r d a y}{\to} ?$

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Which number should come next in the series : 1, 3, 6, 10, 15?

Analytical Question

Related Question

1. Which number comes next in the sequence? 1,2,0,3,-1,4................

2. Mithu is ranked twenty- first in a class of sixty-five students. What will be his rank if the lowest candidate is assigned rank 1?

3. Four of the following five are alike in a certain way and so form a group . Which one of the following does not belong to that group?

4. Select an appropriate term that complete the seriesL, p, F, N q G, P r H, R s 1-

5. The day that will come 3 days after →tomorrow will be Saturday. What was the day two days before →yesterday?

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5. $T h e d a y t h a t w i l l c o m e 3 d a y s a f t e r \overset{t o m o r r o w}{\to} w i l l b e S a t u r d a y . W h a t w a s t h e d a y t w o d a y s b e f o r e \overset{y e s t e r d a y}{\to} ?$