Search found 89 matches
Arithmetic sequence
What is the third term in a sequence of numbers that leave remainders of 1, 2 and 3 when divided by 2, 3 and 4 respectively?
1.11
2.17
3.19
4.23
5.35
- by danjuma
Thu Dec 09, 2010 12:03 pm- Forum: Problem Solving
- Topic: Arithmetic sequence
- Replies: 5
- Views: 3626
Integers
How many positive integers less than 10,000 are such that the product of their digits is 210?
Sorry, i do not have the answer choice
- by danjuma
Thu Dec 09, 2010 12:00 pm- Forum: Problem Solving
- Topic: Integers
- Replies: 1
- Views: 1004
Probability
What is the probability of getting a sum of 8 or 14 when rolling 3 dice simultaneously?
1.1/6
2.1/4
3.1/2
4.21/216
5.32/216
- by danjuma
Thu Dec 09, 2010 11:57 am- Forum: Problem Solving
- Topic: Probability
- Replies: 1
- Views: 972
Range
For the students in class A, the range of their heights is r cm and the greatest height is g cm. For the students in class B , the range of their heights is s cm and the greatest height is h cm. Is the least height of the students in class A greater than the least height of the students in class B? ...
- by danjuma
Sat Dec 04, 2010 10:20 pm- Forum: Data Sufficiency
- Topic: Range
- Replies: 1
- Views: 979
Probability
A basket contains 5 apples of which 1 is spoiled and the rest are good. If Henry is to select 2 apples from the basket simultaneously and at random, what is the probability that 2 apples selected will include the spoiled apple?
a.1/5 b.3/10 c.2/5 d.1/2 e.3/5
- by danjuma
Sat Dec 04, 2010 10:13 pm- Forum: Problem Solving
- Topic: Probability
- Replies: 3
- Views: 1174
DS
What is the hundredths digit of the decimal Z?
a. The tenths digit of 100z is 2
b.The unit digit of 1000z is 2
- by danjuma
Sat Dec 04, 2010 10:07 pm- Forum: Data Sufficiency
- Topic: DS
- Replies: 2
- Views: 1194
Arithmetic sequence
In the arithmetic sequence T1, T2, T3......... Tn... T1 = 23 and Tn_1 - 3 for each n > 1. What is the value of n when Tn = -4?
a.10
b.7
c.6
d.20
e.22
- by danjuma
Sat Dec 04, 2010 9:56 pm- Forum: GMAT Math
- Topic: Arithmetic sequence
- Replies: 1
- Views: 1223
PS
The sum of X and Y's ages is 105. When X was Y's age, she was one and a half times Y's age. What are there present ages.?
- by danjuma
Tue Nov 30, 2010 12:34 pm- Forum: Problem Solving
- Topic: PS
- Replies: 2
- Views: 1105
Mean, Median
Five pieces of wood have an average lenght of 124cm and a median of 140cm. What is the maximum posible lenght in cm of the shortest piece of wood?
Thanks, Danju.
- by danjuma
Mon Nov 29, 2010 10:58 am- Forum: Problem Solving
- Topic: Mean, Median
- Replies: 1
- Views: 1059
- by danjuma
Mon Nov 29, 2010 10:54 am- Forum: Data Sufficiency
- Topic: DS
- Replies: 2
- Views: 1172
- by danjuma
Mon Nov 29, 2010 10:52 am- Forum: Data Sufficiency
- Topic: DS
- Replies: 2
- Views: 1073
- by danjuma
Mon Nov 29, 2010 10:49 am- Forum: Data Sufficiency
- Topic: DS
- Replies: 2
- Views: 1195
DS-Probability
A drawer contains 36 stocks and 2 stocks are selected at random without replacement. What is the probability that both socks are black?
1.The probability is 4/9 that the first sock is black.
2.The number of white socks in the drawer is 4 more than the number of black socks.
- by danjuma
Sat Nov 27, 2010 3:30 pm- Forum: Data Sufficiency
- Topic: DS-Probability
- Replies: 2
- Views: 1063
DS
A certain lists consists of several different integers. Is the product of all the integers in the list positive?
1. The product of the greatest and smallest of the integers in the list is positive.
2.There is an even number of integers in the list.
- by danjuma
Fri Nov 26, 2010 11:25 pm- Forum: Data Sufficiency
- Topic: DS
- Replies: 2
- Views: 1010