Some large clusters of galaxies do not appear to contain enough ...

[cookcarl]

Some large clusters of galaxies do not appear to contain enough mass to hold themselves together.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

A white dwarf whose red giant companion dumps hydrogen onto it may
 
  a. show no effect.
  b. explode recurrently as a nova.
  c. blow up as a type I supernova.
  d. explode recurrently as a nova or blow up as a type Ia supernova.

[at]

Answer to Question 1

True

Answer to Question 2

d