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1. Insert the missing number. $12,25,49,99,197,395,\_$ | |

A. $789$ | B. $812$ |

C. $1579$ | D. $722$ |

Discuss |

answer with explanation

Answer: Option A

Explanation:

Each number is twice the previous one with $1$ added or subtracted alternatively.2. Insert the missing number. $34,7,37,14,40,28,43,\_$ | |

A. $42$ | B. $56$ |

C. $31$ | D. $46$ |

Discuss |

answer with explanation

Answer: Option B

Explanation:

We have two series here.

$34,37,40,43,\cdots \text{(increase by 3)}\\7,14,28,\cdots \text{(multiply by 2)}$

Hence, next term is $28×2=56$

3. Find the missing number. $1,4,9,16,25,36,49,\_$ | |

A. $64$ | B. $81$ |

C. $54$ | D. $56$ |

Discuss |

answer with explanation

Answer: Option A

Explanation:

The series is $1^2,2^2,3^2,4^2,5^2,6^2,7^2,\cdots$

Hence, next term $=8^2=64$

4. Insert the missing number. $2,7,10,22,18,37,26,\_$ | |

A. $52$ | B. $42$ |

C. $62$ | D. $46$ |

Discuss |

answer with explanation

Answer: Option A

Explanation:

There are two series here

$2,10,18,26,\cdots \text{(increase by 8)}\\7,22,37,\cdots \text{(increase by 15)}$

Hence, next term $=37+15=52$

5. Find the missing number. $4,12,48,240,1440,\_$ | |

A. $10020$ | B. $10080$ |

C. $7620$ | D. $6200$ |

Discuss |

answer with explanation

Answer: Option B

Explanation:

$4×3=12\\12×4=48\\48×5=240\\240×6=1440\\1440×7=10080$Dev

2015-04-09 18:33:35

5

Two series

1 2 3 4

8 7 6 5

Two series

1 2 3 4

8 7 6 5

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Victory

2015-04-02 06:18:42

3 5 6 12 ----- 24 26

Missing number for this is 19. Please let me how the answer is 19

gaurav

2015-10-02 14:57:10

3 6 12 24 (alternate terms getting doubled)

5 12 19 26 (increased by 7 alternate terms)

5 12 19 26 (increased by 7 alternate terms)

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md

2015-04-14 08:12:28

51

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chirag

2015-03-16 11:41:26

18,27,49,84,132..

a) 188

b) 193

c) 168

can nybody tel how the ans wil be 193 ???

arnav

2016-08-17 06:37:39

18+9 = 27

27+22(9+13=22) = 49

49+35(22+13) =84

84+48(35+13) = 132

132+61 (48+13) =193

27+22(9+13=22) = 49

49+35(22+13) =84

84+48(35+13) = 132

132+61 (48+13) =193

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