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a series of tests is the most popular phrase on the web.

a numbers of tests 138 results on the web	a series of tests 1235,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Jun 22, 2000 ... The Company reported that it has performed a numbers of tests to determine whether or not the Company has any business on the books for�... Medical professionals perform a numbers of tests at separate times before a person is pronounced brain dead. If these tests prove that brain death has occurred,�... EDTA, represents aggregation capability of functional platelets during storage6. Though a numbers of tests are available, no single test is reflective of PSL in toto �... a Numbers of tests are not always multiples of 10, owing to the death of a few strains at individual sites. b Numbers in parentheses indicate the number of�...	. SAT as I think it is in your sentence, where a "series of tests" is one thing, so you want a singular�... As you can see, the word is practically always going to be singular GRE Using likelihood ratios to analyze a series of tests. \| Previous Section \| Main Menu \| \| Next Section \|. Patients often undergo a series of diagnostic tests during the�... MCAT, ete,z then Kaplan extends this series to in?nity by�... these tests, but prepares you for them. If life used to be a series of tests that went, e.g. PSAT

a numbers of tests

138 results on the web

a series of tests

1235,000 results on the web

More popular!

Jun 22, 2000 ... The Company reported that it has performed a numbers of tests to determine whether or not the Company has any business on the books for�...
Medical professionals perform a numbers of tests at separate times before a person is pronounced brain dead. If these tests prove that brain death has occurred,�...
EDTA, represents aggregation capability of functional platelets during storage6. Though a numbers of tests are available, no single test is reflective of PSL in toto �...
a Numbers of tests are not always multiples of 10, owing to the death of a few strains at individual sites. b Numbers in parentheses indicate the number of�...

. SAT
as I think it is in your sentence, where a "series of tests" is one thing, so you want a singular�...
As you can see, the word is practically always going to be singular
GRE
Using likelihood ratios to analyze a series of tests. | Previous Section | Main Menu | | Next Section |. Patients often undergo a series of diagnostic tests during the�...
MCAT, ete,z then Kaplan extends this series to in?nity by�...
these tests, but prepares you for them. If life used to be a series of tests that went, e.g. PSAT