Tag: math & puzzles

Questions Related to math & puzzles

6-15-35-77-143-?

  1. 128

  2. 221

  3. 141

  4. 152


Correct Option: B

123-354-897-1875-10626-?

  1. 201426

  2. 24576

  3. 16887

  4. 32985


Correct Option: C

28-44-68-104-158-?

  1. 236

  2. 198

  3. 239

  4. 224


Correct Option: C

2-6-30-260-3130-?

  1. 24168

  2. 7856

  3. 46662

  4. 9258


Correct Option: C

AI Explanation

To find the missing number in the given sequence 2-6-30-260-3130-?, we need to identify the pattern or rule that governs the sequence.

Let's analyze the given sequence:

2, 6, 30, 260, 3130, ?

Looking at the numbers, we can notice that each number in the sequence is obtained by multiplying the previous number by a specific factor and then subtracting a certain value.

The pattern can be described as follows:

To obtain the next number, multiply the previous number by 10 and subtract the square of the previous number.

Let's apply this pattern to the given sequence:

2 * 10 - 2^2 = 20 - 4 = 16 6 * 10 - 6^2 = 60 - 36 = 24 30 * 10 - 30^2 = 300 - 900 = -600 260 * 10 - 260^2 = 2600 - 67600 = -65000 3130 * 10 - 3130^2 = 31300 - 980900 = -949600

Therefore, the missing number in the sequence is -949600.

Now, let's check the given options:

A. 24168 B. 7856 C. 46662 D. 9258

None of the options match the calculated missing number of -949600.

Hence, none of the given options are correct.

It is possible that there is an error in the question or the correct answer is not among the given options.

2-4-9-28-125-726-?

  1. 5224

  2. 4224

  3. 5047

  4. 5421


Correct Option: C

AI Explanation

To solve this sequence, let's analyze the given numbers:

2, 4, 9, 28, 125, 726, ?

Looking at the sequence, we can see that each number is obtained by performing different mathematical operations on the previous number.

To find the pattern, let's examine the differences between consecutive numbers:

4 - 2 = 2 9 - 4 = 5 28 - 9 = 19 125 - 28 = 97 726 - 125 = 601

From these differences, we can see that they are not following a simple arithmetic or geometric progression.

However, if we look closely, we can observe that the differences are increasing significantly with each step.

To continue the pattern, we need to add the next difference to the last number in the sequence:

726 + 601 = 1327

Therefore, the missing number in the sequence is 1327.

None of the options provided match 1327.

Hence, the correct answer is not listed among the given options.

500-615-764-1313-2152-?

  1. 3336

  2. 3806

  3. 3725

  4. 4000


Correct Option: D

2-4-8-10-5-11-?

  1. 4

  2. 8

  3. 12

  4. 15


Correct Option: A