Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 13

MEDIUM

CAT

IMPORTANT

Earn 100

If $a, b, c$ are in $A . P$ . then $a + \frac{1}{b c}, b + \frac{1}{c a}, c + \frac{1}{a b}$ are in:

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Important Questions on X+2 Maths

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 14

The ratio of

HM

and

GM

for two positive numbers is

4 : 5

. What is the ratio of the numbers?

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 15

The arithmetic mean of the nine numbers in the set

{9, 99, 999, 9999, \dots, 999999999}

is a

9

-digit number

M

all of whose digits are distinct. The number

M

does not contain the digit:

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 16

The

288 t h

term of the series

a, b, b, c, c, c, d, d, d, d, e, e, e, e, e, . . .

is:

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 17

The product of

n

positive numbers is

1

. Their sum is:

HARD

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 18

If

t_{n}

denotes the

n^{th}

term of the series

2 + 3 + 6 + 11 + 18 + \dots .

then

t_{50}

is

MEDIUM

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 19

If

a^{x} = b^{y} = c^{z}

and

x, y, z

are in GP, then

\log_{c} b

is equal to:

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 20

The numbers

1

,

4

, and

16

can be three terms (not necessarily consecutive) of:

EASY

CAT

IMPORTANT

Quantitative Aptitude for the CAT>Chapter 3 - X+2 Maths>Practice Exercises>Q 21

If

a, b, c

, and

d

are four positive numbers, then which of the following is not true?