IMO C
1) not suff
a=-13, b=7
a=-20,b=14
2) not suff.
a and b can take any values as long as both are negative or both are positive
combined
the distance between them is 6
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Modulus
Source: Beat The GMAT — Data Sufficiency |
would go with C
stmnt 1. |a| – |b| = 6
let a and b be on either sides of 0 on the number line
let a=-10, b=4 distance between a and b is 14 (10+4)
let a and b be on the same side (both +ive or both ive)
say a=10, b=4 distance between a and b is 6 (10-6)
not sufficient
stment 2. ab > 0
=> either a and b both are positive or a and b both negative
=>a and b on the same side
no values are given, cant find distance.
not sufficient
combining, a and b on the same side
distance between a and b must be 6
hence, C
stmnt 1. |a| – |b| = 6
let a and b be on either sides of 0 on the number line
let a=-10, b=4 distance between a and b is 14 (10+4)
let a and b be on the same side (both +ive or both ive)
say a=10, b=4 distance between a and b is 6 (10-6)
not sufficient
stment 2. ab > 0
=> either a and b both are positive or a and b both negative
=>a and b on the same side
no values are given, cant find distance.
not sufficient
combining, a and b on the same side
distance between a and b must be 6
hence, C
