<Page>
Item 10
Dryden Core Investment Fund
Semi-Annual period ending 07/31/03
File No. 811-09999
CERTIFICATIONS
I, Judy A. Rice, certify that:
1. I have reviewed this report on Form N-CSR of Dryden Core
Investment Fund;
2. Based on my knowledge, this report does not contain any untrue
statement of a material fact or omit to state a material fact
necessary to make the statements made, in light of the
circumstances under which such statements were made, not
misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other
financial information included in this report, fairly present in
all material respects the financial condition, results of
operations, changes in net assets, and cash flows (if the
financial statements are required to include a statement of cash
flows) of the registrant as of, and for, the periods presented in
this report.
4. The registrant's other certifying officers and I are responsible
for establishing and maintaining disclosure controls and
procedures (as defined in Rule 30a-3(c) under the Investment
Company Act of 1940) for the registrant and have:
a) Designed such disclosure controls and procedures, or caused
such disclosure controls and procedures to be designed
under our supervision, to ensure that material information
relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those
entities, particularly during the period in which this
report is being prepared;
b) Evaluated the effectiveness of the registrant's disclosure
controls and procedures and presented in this report our
conclusions about the effectiveness of the disclosure
controls and procedures, as of a date within 90 days prior
to the filing date of this report based on such evaluation; and;
c) Disclosed in this report any change in the registrant's
internal control over financial reporting that occurred
during the registrant's most recent fiscal half-year (the
registrant's second fiscal half-year in the case of an
annual report) that has materially affected, or is
reasonably likely to materially affect, the registrant's
internal control over financial reporting; and
5. The registrant's other certifying officers and I have disclosed
to the registrant's auditors and the audit committee of the
registrant's board of directors (or persons performing the
equivalent functions):
a) All significant deficiencies and material weaknesses in the
design or operation of internal controls which are
reasonably likely to adversely affect the registrant's
ability to record, process, summarize, and report financial
information; and
b) Any fraud, whether or not material, that involves
management or other employees who have a significant role
in the registrant's internal control over financial reporting.
Date: September 26, 2003
/s/Judy A. Rice
-------------------------
Judy A. Rice
President and Principal Executive
Officer
<Page>
Item 10
Dryden Core Investment Fund
Semi-Annual period ending 07/31/03
File No. 811-09999
CERTIFICATIONS
I, Grace C. Torres, certify that:
1. I have reviewed this report on Form N-CSR of Dryden Core
Investment Fund;
2. Based on my knowledge, this report does not contain any untrue
statement of a material fact or omit to state a material fact
necessary to make the statements made, in light of the
circumstances under which such statements were made, not
misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other
financial information included in this report, fairly present in
all material respects the financial condition, results of
operations, changes in net assets, and cash flows (if the
financial statements are required to include a statement of cash
flows) of the registrant as of, and for, the periods presented in
this report.
4. The registrant's other certifying officers and I are responsible
for establishing and maintaining disclosure controls and
procedures (as defined in Rule 30a-3(c) under the Investment
Company Act of 1940) for the registrant and have:
a. Designed such disclosure controls and procedures, or caused
such disclosure controls and procedures to be designed
under our supervision, to ensure that material information
relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those
entities, particularly during the period in which this
report is being prepared;
b. Evaluated the effectiveness of the registrant's disclosure
controls and procedures and presented in this report our
conclusions about the effectiveness of the disclosure
controls and procedures, as of a date within 90 days prior
to the filing date of this report based on such evaluation; and;
c. Disclosed in this report any change in the registrant's
internal control over financial reporting that occurred
during the registrant's most recent fiscal half-year (the
registrant's second fiscal half-year in the case of an
annual report) that has materially affected, or is
reasonably likely to materially affect, the registrant's
internal control over financial reporting; and
5. The registrant's other certifying officers and I have disclosed
to the registrant's auditors and the audit committee of the
registrant's board of directors (or persons performing the
equivalent functions):
a. All significant deficiencies and material weaknesses in the
design or operation of internal controls which are
reasonably likely to adversely affect the registrant's
ability to record, process, summarize, and report financial
information; and
b. Any fraud, whether or not material, that involves
management or other employees who have a significant role
in the registrant's internal control over financial reporting.
Date: September 26, 2003
/s/Grace C. Torres
-------------------------
Grace C. Torres
Treasurer and Chief Financial Officer