A person has 2 parents, 4 grandparents, 8 great grandparents and so on. How many ancestors during the 15 generations preceding his own, assuming no duplication?
A131070
B65534
C32766
D16383
#242
In the PBA three-point shootout contest, the committee decided to give a prize in the following manner: A prize of P1 for the first basket made, P 2 for the second, P 4 for the third, P8 for the fourth and so on. If the contestant wants to win a prize of no less than a million pesos, what is the minimum number of baskets to be converted?
A20
B19
C18
D21
#243📜 CE Board November 1994
In a benefit show, a number of wealthy men agreed that the first one to arrive would pay 10 centavos to enter and each later arrive would pay twice as much as the preceding man. The total amount collected from all of them was P 104,857.50. How many wealthy men paid?
A18
B19
C20
D21
#244
A man mailed 10 chain letters to ten of his friends with a request to continue by sending a similar letter to each of their ten friends. If this continue for 6 sets of letters and if all responded, how much will the Phil. Postal office earn if minimum postage costs P 4 per letter?
AP 6,000,000
BP 60,000
CP 2,222,220
DP 4,444,440
#245📜 EE Board March 1998
Determine the sum of the infinite series: \(S=\frac{1}{3}+\frac{1}{9}+\frac{1}{27}+...+(\frac{1}{3})^n\)
A\(4/5\)
B\(3/4\)
C\(2/3\)
D\(1/2\)
#246
Under favorable condition, a single cell bacteria divided into two about every 20 minutes. If the same rate of division is maintained for 10 hours, how many organisms is produced from a single cell?
A1,073,741
B1,730,74
C1,073,741,823
D1,037,417
#247📜 EE Board October 1994
A rubber ball is made to fall from a height of 50 feet and is observed to rebound \(2/3\) of the distance it falls. How far will the ball travel before coming to rest if the ball continues to fall in this manner?
A200 feet
B225 feet
C250 feet
D275 feet
#248📜 EE Board April 1990
What is the fraction in lowest term equivalent to 0.133133133?
A\(\frac{133}{666}\)
B\(\frac{133}{777}\)
C\(\frac{133}{888}\)
D\(\frac{133}{999}\)
#249📜 ECE Board April 1998
Find the sum of the infinite geometric progression 6, -2, \(2/3\), ...
A\(9/2\)
B\(5/2\)
C\(7/2\)
D\(11/2\)
#250📜 CE Board May 1998
Find the sum of 1, \(-\frac{1}{5}, \frac{1}{25}\)
A\(5/6\)
B\(2/3\)
C0.84
D0.72
#251📜 ECE Board November 1998
Find the ratio of an infinite geometric progression if the sum is 2 and the first term is \(1/2\).
A\(1/3\)
B\(1/2\)
C\(3/4\)
D\(1/4\)
#252📜 EE Board April 1997
If equal spheres are piled in the form of a complete pyramid with an equilateral triangle as base, find the total number of spheres in the pile if each side of the base contains 4 spheres.
A15
B20
C18
D21
#253
Find the \(6^{th}\) term of the sequence 55, 40, 28, 19, 13,...
A10
B9
C8
D11
#254📜 EE Board October 1997
In the series 1, 1, \(1/2\), \(1/6\), \(1/24\),..., determine the \(6^{th}\) term.
A\(1/80\)
B\(1/74\)
C\(1/100\)
D\(1/120\)
#255📜 ECE Board April 1998
Find the \(1987^{th}\) digit in the decimal equivalent to \(\frac{1785}{9999}\) starting from the decimal point.
A8
B1
C7
D5
#256
__________ are real numbers that cannot be expressed as a quotient of two integers
Airrational numbers
Brational numbers
Cintegers
Dmixed numbers
#257
_______ is the procedure for obtaining, processing and analyzing data in an orderly manner, and for making logical decisions based on the data
Atrigonometry
BBoolean algebra
Calgorithm
Dlogarithm
#258
The logarithm of a number to a given base is called the _________
Aexponent
Bindex
Cbase
Dmatriz
#259
The ____________ of a and b is the smallest positive integer that is a multiple of both a and b
Aleast common multiple
Bleast common denominator
Cleast common factor
Dgreatest common factor
#260
_________ are irrational numbers involving radical signs